Belgian prosecutors launched a public appeal Thursday seeking any information on the "man in hat" suspect in the Brussels Airport suicide bombings that killed 16 people. 
 
 Belgian Federal Prosecutor Eric Van der Sypt said authorities were especially interested in any people who might have filmed or photographed the man. 
 
 He was seen at the airport with two suicide bombers before they died in the March 22 attacks. A subsequent explosion at Brussels' Maelbeek subway station killed another 16 people the same morning. 
 
 Photos released by prosecutors showed the "man in hat" leaving the airport on foot, walking to the nearby town of Zaventem and then into Brussels, where all traces of him were reportedly lost. 
 
 The suspect also wore a white jacket but discarded it at some point, prosecutors said. 
 
 The appeal for public assistance more than two weeks after the suicide bombings indicated that investigators have hit a standstill. Three bombers, two at the airport and one in the subway, also died in the attacks, which were claimed by Islamic State. 
 
 According to a video reconstitution of the suspect's itinerary presented to reporters, the man left the Brussels Airport terminal at 7:58 a.m. before two other men he was with in the building exploded suitcases laden with explosives. He passed by a Sheraton hotel, walked through the town of Zaventem, discarded his jacket, and was seen on video footage at Meiser square in northeastern Brussels at 9:42 a.m. 
 
 3 Brussels attackers dead, more sought Interpol photos Clockwise from left: Najim Laachraoui and Ibrahim El Bakraoui are dead, killed in suicide blasts at the Brussels airport, authorities said. Khalid El Bakraoui, Ibrahim's brother, died in the suicide attack on the Brussels subway a short while later. A third man, the "man in hat" was seen on security video at the airport with the two dead attackers and is being sought by authorities. Clockwise from left: Najim Laachraoui and Ibrahim El Bakraoui are dead, killed in suicide blasts at the Brussels airport, authorities said. Khalid El Bakraoui, Ibrahim's brother, died in the suicide attack on the Brussels subway a short while later. A third man, the "man in hat" was seen on security video at the airport with the two dead attackers and is being sought by authorities. (Interpol photos) (Interpol photos) 
 
 Eight minutes later, his trail vanishes. 
 
 Belgian authorities are hoping that they or someone finds the discarded light-colored jacket, saying it could yield precious clues. Federal Prosecutor Thierry Werts also said there had been many people around the hotel when the suspect walked by who may now be overseas, and asked for their assistance as well. 
 
 Prosecutors asked "people who might have filmed or taken a photograph of the suspect or think they can provide extra information" to call a special telephone number or to email authorities. 
 
 Earlier Thursday, the lawyer for Paris attacks suspect Salah Abdeslam said it will take some weeks before his client can be extradited from Belgium to France. 
 
 Sven Mary spoke after a legal hearing on the Belgian-born French citizen's continuing detention in Belgium. He said the existing "Belgian arrest warrant must be lifted for (Abdeslam's) transfer" to France, in accordance with the extradition request. 
 
 Shrapnel Laurent Dubrule / EPA A piece of steel and a screw recovered from the body of a person injured in the March 22 terrorist attacks, at a hospital in Leuven, Belgium, on March 24, 2016. A piece of steel and a screw recovered from the body of a person injured in the March 22 terrorist attacks, at a hospital in Leuven, Belgium, on March 24, 2016. (Laurent Dubrule / EPA) (Laurent Dubrule / EPA) 
 
 Mary said before Belgian authorities allow Abdeslam to leave they want to question the 26-year-old about another case — a deadly police raid in the Forest neighborhood of Brussels days before his arrest. 
 
 Abdeslam fled to Belgium after the deadly Nov. 13 attacks on Paris and was arrested March 18 after four months on the run. Since his arrest he has been in a prison in the Belgian city of Bruges. 
 
 He faces preliminary terrorism charges in France for the Paris attacks, which killed 130 people and left hundreds wounded. 
 
 Associated Press 

 Skip Ad Ad Loading... x Embed x Share Belgian Federal police released this video showing what they believe is the escape route of one of the terrorists involved in the attack on the Brussels airport. Video by Jasper Colt, USA TODAY 
 
 A photo presented by Belgian federal prosecutors shows a suspect wanted in connection with the Brussels attacks of March 22. (Photo: Olivier Hoslet, epa) 
 
 Belgian prosecutors released new video footage Thursday of a suspected Brussels Airport attacker, showing the apparent route he took after fleeing the carnage. 
 
 The video shows the suspect walking down streets in the town of Zaventem, where the airport is located, and later in Brussels. It also provides an animated aerial view of his path. 
 
 Eric Van Der Sypt, spokesman for the federal prosecutor's office, asked anyone who may have seen or inadvertently photographed the man to come forward. Van Der Sypt said the man apparently discarded his jacket, and urged anyone who may have found the clothing to turn it in. 
 
 "The jacket he left behind is bright with a hood which is dark inside. Should this jacket be found, this might give invaluable information to the investigators," Van Der Sypt said. He said the suspect's shirt was bright blue with yokes on the elbows. He was also wearing dark trousers and brown shoes with a large white sole. 
 
 The attacks at the airport and a subway station March 22 left 32 victims and three suicide bombers dead. The Islamic State claimed responsibility for the strikes. 
 
 Two bombers died in the blasts at the airport. On previously released surveillance video, the suspected third attacker, wearing a hat and light-colored jacket, is shown walking beside the two other terrorists. A still frame seen around the world shows the man pushing a cart with luggage that authorities say contained a 35-pound bomb. That bomb, the largest the terrorists made for that day, did not detonate. 
 
 An intensive manhunt has been underway for the man, notoriously known as either "the man in the hat" or "the man in white." Police took a man into custody more than week ago but released him a short time later saying he apparently was not the man they sought from the video. 
 
 The other two men in the airport surveillance video have been identified as Ibrahim El Bakraoui, 29, and Najim Laachraoui, a bomb-maker linked by DNA to the Paris terror attacks in November that killed 130 people. 
 
 The European Parliament said Wednesday that Laachraoui worked for a parliament cleaning contractor for about a month in 2009 and again in 2010 while he as a student. 
 
 Skip Ad Ad Loading... x Embed x Share TERROR ATTACKS ROCK BRUSSELS AIRPORT, METRO STATION Brussels bombers originally planned more attacks in Paris | 0:56 Prosecutors say the Brussels attackers were originally targeting Paris in a second wave of attacks.Video provided by Newsy Newslook 1 of 28 Skip Ad Ad Loading... x Embed x Share TERROR ATTACKS ROCK BRUSSELS AIRPORT, METRO STATION 'Man in hat' among several Brussels bombing suspects arrested | 0:45 Authorities have arrested several suspects in the Brussels bombings, including one of the wanted men seen in airport surveillance footage.Video provided by Newsy Newslook 2 of 28 Skip Ad Ad Loading... x Embed x Share TERROR ATTACKS ROCK BRUSSELS AIRPORT, METRO STATION Raw: Muslims Honor Brussels Attacks Victims | 0:55 Representatives of Belgium's Muslim communities gathered outside Maelbeek Metro station on Saturday to pay their respects to those killed in an attack at the station last month. (April 9) AP 3 of 28 Skip Ad Ad Loading... x Embed x Share TERROR ATTACKS ROCK BRUSSELS AIRPORT, METRO STATION Raw: Police Continue Raid Operations in Brussels | 1:27 A police operation was under way on Saturday in the Brussels district of Etterbeek after Belgian officials confirmed a sixth arrest over suspected links to the March 22 Brussels bombings. Five others were arrested on Friday. (April 9) AP 4 of 28 Skip Ad Ad Loading... x Embed x Share TERROR ATTACKS ROCK BRUSSELS AIRPORT, METRO STATION Belgian police arrest 6th suspect in attacks | 0:25 Belgium's justice minister Koen Geens said Belgian authorities arrested a sixth person late on Friday in connection with the suicide attacks in Brussels. Wochit 5 of 28 Skip Ad Ad Loading... x Embed x Share TERROR ATTACKS ROCK BRUSSELS AIRPORT, METRO STATION Raw: New Images of Brussels Airport Suspect | 1:07 Belgium's Federal Prosecutor's Office has released new video and surveillance photographs of a suspect wanted in connection with the deadly Brussels airport attack. (April 7) AP 6 of 28 Skip Ad Ad Loading... x Embed x Share TERROR ATTACKS ROCK BRUSSELS AIRPORT, METRO STATION Brussels attacker's escape route traced by Belgian police | 2:09 Belgian Federal police released this video showing what they believe is the escape route of one of the terrorists involved in the attack on the Brussels airport. Video by Jasper Colt, USA TODAY 7 of 28 Skip Ad Ad Loading... x Embed x Share TERROR ATTACKS ROCK BRUSSELS AIRPORT, METRO STATION Brussels death toll revised to 32 | 0:37 Belgian authorities have lowered the death toll from last week's Brussels suicide attacks to 32 victims after "thorough verification," a day after they had raised the number of dead to 35. Video provided by AFP Newslook 8 of 28 Skip Ad Ad Loading... x Embed x Share TERROR ATTACKS ROCK BRUSSELS AIRPORT, METRO STATION U.S. couple dead in Brussels were avid travelers | 0:44 Justin and Stephanie Shults moved to Belgium a few years after getting married. They loved exploring new cities together. VPC 9 of 28 Skip Ad Ad Loading... x Embed x Share TERROR ATTACKS ROCK BRUSSELS AIRPORT, METRO STATION Parents of Belgium survivor thankful for support | 1:10 The parents of a U.S. teen injured in the Brussels attacks said Friday they are thankful for the support they have received from around the world. (March 25) AP 10 of 28 Skip Ad Ad Loading... x Embed x Share TERROR ATTACKS ROCK BRUSSELS AIRPORT, METRO STATION Brussels attack: What we know so far | 1:06 Americans were among those killed in the Brussels terror attacks, confirmed by U.S. Secretary of State John Kerry, who traveled to Belgium to hold counter-terrorism talks with European officials. VPC 11 of 28 Skip Ad Ad Loading... x Embed x Share TERROR ATTACKS ROCK BRUSSELS AIRPORT, METRO STATION Brussels Attack Survivor: ‘I Feel Lucky’ | 2:39 Mason Wells, a 19-year-old from Utah, is expected to make a full recovery after surviving the bombing attack at the Brussels airport on Tuesday. (March 25) AP 12 of 28 Skip Ad Ad Loading... x Embed x Share TERROR ATTACKS ROCK BRUSSELS AIRPORT, METRO STATION 5 things to know about the Brussels terror attacks | 1:00 Tragedy struck Brussels when bombers targeted Brussels Airport and a city metro station. ISIL is claiming responsibility for the violence. VPC 13 of 28 Skip Ad Ad Loading... x Embed x Share TERROR ATTACKS ROCK BRUSSELS AIRPORT, METRO STATION 3 things we still don't know about the Brussels attack | 0:44 While investigators try to piece together the Brussels attack, many questions about the terrorists involved and missing victims still remain unanswered. VPC 14 of 28 Skip Ad Ad Loading... x Embed x Share TERROR ATTACKS ROCK BRUSSELS AIRPORT, METRO STATION Kerry confirms that Americans died in Brussels attack | 0:46 U.S. Secretary of State John Kerry confirmed that Americans were among the dead after the terrorist attacks in Belgium. USA TODAY 15 of 28 Skip Ad Ad Loading... x Embed x Share TERROR ATTACKS ROCK BRUSSELS AIRPORT, METRO STATION Raw: Hundreds Honor Brussels Attack Victims | 1:13 Hundreds of people gathered at Place de La Bourse in central Brussels on Thursday to observe a minute of silence for the victims of attacks that hit the city two days ago. (March 24) AP 16 of 28 Skip Ad Ad Loading... x Embed x Share TERROR ATTACKS ROCK BRUSSELS AIRPORT, METRO STATION Ohio volunteers return home from Brussels attack | 0:49 Two volunteers from Ohio have returned home after being in the Brussels airport when two bombs exploded, killing at least 30 people and injuring scores. (March 24) AP 17 of 28 Skip Ad Ad Loading... x Embed x Share TERROR ATTACKS ROCK BRUSSELS AIRPORT, METRO STATION Raw: EU Lawmakers Pay Respects In Belgium | 0:55 Lawmakers and the King and Queen of Belgium held a minute of silence on Wednesday for the victims of the Brussels attacks that claimed 34 lives and injured dozens on Tuesday. Officials also laid a wreath at the Maelbeek metro station. (March 23) AP 18 of 28 Skip Ad Ad Loading... x Embed x Share TERROR ATTACKS ROCK BRUSSELS AIRPORT, METRO STATION ISIL claims responsibility for deadly explosions in Brussels | 1:40 The multiple explosions have killed at least 34 people at an airport and a subway station in Brussels.Video provided by Newsy Newslook 19 of 28 Skip Ad Ad Loading... x Embed x Share TERROR ATTACKS ROCK BRUSSELS AIRPORT, METRO STATION Manhunt Underway For Brussels Bombing Suspect | 1:41 Belgian authorities searched Wednesday for a man pictured with two apparent suicide bombers, a day after 34 people were killed, including three suicide bombers, and more than 200 wounded in attacks at the Brussels airport and subway. (March 23) AP 20 of 28 Skip Ad Ad Loading... x Embed x Share TERROR ATTACKS ROCK BRUSSELS AIRPORT, METRO STATION 3 Mormon missionaries from Utah hurt in Brussels attacks | 1:03 Three Mormon missionaries from Utah were injured during the explosions at Brussels' international airport. Video provided by Newsy Newslook 21 of 28 Skip Ad Ad Loading... x Embed x Share TERROR ATTACKS ROCK BRUSSELS AIRPORT, METRO STATION U.S. cities step up security after Belgium attacks | 1:54 US Cities ramped up security at airports, transit systems and landmarks across the country Tuesday following the deadly terror attacks in Brussels. Still, officials assured Americans they knew of no specific or credible threats. (March 22) AP 22 of 28 Skip Ad Ad Loading... x Embed x Share TERROR ATTACKS ROCK BRUSSELS AIRPORT, METRO STATION Obama: We 'stand in solidarity' with people of Belgium | 0:48 President Barack Obama commented on the Brussels terror attacks before addressing the people of Cuba in Havana. He said the world needs to unite to fight violence and terrorism. USA TODAY 23 of 28 Skip Ad Ad Loading... x Embed x Share TERROR ATTACKS ROCK BRUSSELS AIRPORT, METRO STATION Fear, panic as people escape from Brussels attacks | 1:21 Dramatic raw videos show people fleeing from Brussels airport and a metro station after several deadly explosions rocked the city. USA TODAY 24 of 28 Skip Ad Ad Loading... x Embed x Share TERROR ATTACKS ROCK BRUSSELS AIRPORT, METRO STATION Raw: Brussels airport damaged after attacks | 0:51 Attackers detonated bombs at the airport and on a metro train beneath the European Union's capital on Tuesday, killing at least 31 people and wounding dozens. AP 25 of 28 Skip Ad Ad Loading... x Embed x Share TERROR ATTACKS ROCK BRUSSELS AIRPORT, METRO STATION France to deploy 1,600 extra police after Brussels attacks | 1:05 French Interior Minister Bernard Cazeneuve Tuesday said Paris was deploying 1,600 additional police to border crossings and air, sea and rail infrastructure after the Brussels attacks which killed at least 21 people. Newslook 26 of 28 Skip Ad Ad Loading... x Embed x Share TERROR ATTACKS ROCK BRUSSELS AIRPORT, METRO STATION Raw: Inside Brussels airport and subway attacks | 2:34 Video of passengers trapped inside the Brussels airport and inside the underground transport system in immediate aftermath of two explosions at the airport and one in the metro system. AP 27 of 28 Skip Ad Ad Loading... x Embed x Share TERROR ATTACKS ROCK BRUSSELS AIRPORT, METRO STATION Raw: Inside Belgium airport after attack | 2:09 The immediate aftermath of the explosion at the departure terminal at Brussels' Zavantem airport was caught on camera on Tuesday. AP 28 of 28 Last VideoNext Video Brussels bombers originally planned more attacks in Paris 
 
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 Also identified in the Brussels attacks is Khalid El Bakraoui, 27, Ibrahim's brother, who blew himself up in a subway car at a metro station. 
 
 Earlier Thursday, lawyers for Salah Abdeslam said it could be weeks before the Paris bombing suspect is extradited from Belgium to France. Abdeslam is accused of helping plan the Paris attacks and then fleeing the city in the hours of chaos following the violence. He was captured in Belgium four days before the Brussels attack. 
 
 On Tuesday, the U.S. State Department designated Abdeslam a global terrorist. The department said witnesses identified Abdeslam as the driver of a car full of gunmen who killed patrons at Paris restaurants, and that authorities found his DNA on a discarded suicide belt and along with traces of explosives in a Brussels apartment. 
 
 "Abdeslam stated after his arrest that he planned on conducting a suicide bombing outside of the Paris soccer stadium, but had ‘backed out,'" the State Department said in a statement. 
 
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 Police released new images Thursday showing the so-called man in white behind the Brussels Airport bombing and appealed for help from the public in tracing his escape from the scene of the attack. 
 
 Prosecutors in Belgium confirmed that the unidentified man was still on the run and said he ditched his light-colored jacket in the minutes after the bombing. 
 
 Sureveillance footage shows new images of the Brussels terror attack suspect. Belgian Police Department 
 
 Surveillance video showed the figure, also dubbed "the man in hat," walking past the nearby Sheraton hotel and an Avis car rental parking lot. He was later seen in the town of Zaventem wearing just a bright shirt with rolled-up sleeves and elbow patches. 
 
 He appears to be walking calmly but at one point breaks into a slow jog. 
 
 Federal prosecutor's spokesman Eric Van der Sypt said that authorities were especially appealing to people who might have filmed or photographed the man, and said the discarded jacket could also yield clues to the March 22 atrocity. 
 
 Earlier video of the suspect at the airport showed him wearing a dark hat and glasses while pushing a luggage cart loaded with a black bag. 
 
 Two other men next to him in that video — Najim Laachraoui and Ibrahim El Bakraoui — blew themselves up in the attack. Bakraoui’s brother, Khalid, carried out an attack in the Brussels subway on the same day. Thirty-two victims were killed in the bombings. 
 
 Police sources had at one point named the man in the hat and light jacket as Laachraoui, a suspected bomb maker in the November 13 attack in Paris. However, officials later corrected that and said Laachraoui had died in the Brussels attack. 
 
 Earlier Thursday, the lawyer for Paris attacks suspect Salah Abdeslam said it will take some weeks before his client can be extradited from Belgium to France. 
 
 Sven Mary spoke after a legal hearing on the Belgian-born French citizen's continuing detention in Belgium. 
 
 Separately, a court in Brussels extended the detention of other suspects linked to the Brussels attacks — Mohamed B., 37, Yassine A., 30, and Aboubaker O., 28. They were arrested March 27. 

 The footage released on Thursday by the Belgian federal police, with French and Flemish voice-overs, provided a first look at how the man in the hat left the airport right after the bombings, and where he went. 
 
 “After the bombs exploded at 7:58, the man wearing a bright jacket and a hat went out of the building, walked past the Sheraton hotel, turned right toward the Avis car parking lot and left the airport area,” the video commentary said. 
 
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 The video, using images from Google Maps, outlines the suspect’s trajectory with a red dot. The surveillance footage shows him walking away from the airport in the midst of travelers and bystanders. Although at one point he can be seen jogging lightly, he appears to be walking at a normal pace most of the time. 
 
 The suspect then walked through Zaventem, the town several miles northeast of Brussels where the airport is, and got rid of his jacket, according to the video commentary. 
 
 “The jacket he left behind is bright, with a hood which is dark inside,” the video said, providing close-up pictures of the clothing. “Should this jacket be found, this might give invaluable information to the investigators.” 
 
 The suspect was seen at 8:50 a.m. at the intersection of two roads in Zaventem, at which point he was wearing “a bright shirt with rolled-up sleeves,” which the police said appeared to be “bright blue with yokes on the elbows.” He was also wearing “dark trousers and brown shoes with a large white sole,” the video said. 
 
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 The suspect was then recorded by closed-circuit TV in Schaerbeek, a neighborhood of Brussels that is southwest of Zaventem — first at 9:42 a.m. and again at 9:49 a.m. He was last caught on camera at 9:50 a.m., at the intersection of the Avenue de la Brabançonne and the Rue du Noyer in Schaerbeek, according to the police video. 
 
 Schaerbeek, a mixed community with a sizeable immigrant population, has been tied to both the Brussels attacks and the Nov. 13 attacks in Paris. 
 
 The DNA of Najim Laachraoui, one of the Brussels Airport suicide bombers, was found in a rented apartment there on Rue Henri Bergé. Investigators believe the apartment was used as a place to make suicide vests for the Paris assailants. 
 
 After the Brussels attacks, Belgian police discovered bomb-making equipment in another apartment in Schaerbeek, on Rue Max Roos, where investigators also found a discarded computer containing the “will” of the second airport suicide bomber, Ibrahim el-Bakraoui. His brother, Khalid, was the subway station bomber. 
 
 “If you saw a left-behind bright-colored jacket between the airport and the Chaussée de Louvain,” the narrator says, referring to a street that enters Schaerbeek, “or if you saw the offender while he was on the run, or if you know which way he went afterward, please contact the investigators.” 
 
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 The Belgian federal prosecutor’s office also made a series of announcements later on Thursday over cases that are not directly connected to the Brussels attacks, but that have underscored the complex array of networks and suspected terrorist plots currently being investigated in France and Belgium. 
 
 The prosecutor’s office said that a court in Brussels had extended by one month the detentions of three men arrested on March 27 in connection with an unspecified terrorism investigation, of two Algerian men linked to a foiled plot in France, and of three Belgian men who were detained in connection with the Paris attacks. 
 
 The prosecutor’s office also announced one additional month of detention for Salah Abdeslam, believed to be the sole surviving direct participant in the Paris attacks, who was arrested in Brussels on March 18 after a four-month manhunt. 
 
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 Earlier on Thursday, Mr. Abdeslam’s Belgian lawyer, Sven Mary, told reporters in Brussels that it would take several weeks before his client was extradited to France and that the Belgian authorities wanted to question him about a deadly raid in the Forest section of Brussels that police officers conducted several days before Mr. Abdeslam’s arrest. 
 
 The detention of a suspected accomplice of Mr. Abdeslam, who was arrested alongside him and has been identified as Amine Choukri, but also Soufien Ayari, was also extended, the prosecutor’s office said. 
 
 Separately, the police in Copenhagen arrested four men suspected of joining the Islamic State while in Syria, with the intention of committing terrorist crimes, the authorities said on Thursday. 
 
 The men were detained in several different areas of the Danish capital around 10 a.m., said Mads Jensen, a spokesman for the Copenhagen police, as part of a joint operation with the Danish security services. 
 
 He added that searches had been performed, and that ammunition and weapons had been seized. The suspects will be arraigned on Friday at a closed hearing. 
 
 According to an April report released by the International Center for Counterterrorism in The Hague, more fighters have returned to Denmark from Syria on a per-capita basis than to any other country in Europe. 
 
 In neighboring Sweden, a 20-year-old man who was taken into custody in Stockholm on Feb. 11 on suspicion of planning a terrorist act was charged on Thursday. The prosecutor said the man, whose identity has not been released, was planning a suicide attack. It would have been the first in Sweden since Taimour Abdulwahab al-Abdaly killed himself and wounded two others in 2010.
– Almost two weeks after admitting they arrested the wrong man, Belgian authorities say the real "man in the hat" has surfaced in surveillance video from after the Brussels attacks. The footage shows the alleged terrorist—wearing a hat, glasses, and a light-colored jacket—leaving the Brussels Airport near Zaventem at 7:58am on March 22 and passing a Sheraton hotel, reports the Chicago Tribune. He's then spotted at an intersection in Zaventem around 8:50am wearing a bright blue shirt, having discarded his jacket, per the New York Times. He's captured on video again at Meiser Square in northeastern Brussels at 9:42am but disappears in the Schaerbeek neighborhood eight minutes later. "The jacket he left behind is bright with a hood which is dark inside. Should this jacket be found, this might give invaluable information to the investigators," an official says. Authorities are also asking people who may have seen or photographed the man—including tourists who've returned home—to come forward, per USA Today. The "man in the hat" first sparked interest when he was spotted on the morning of the attacks alongside Najim Laachraoui and Ibrahim El Bakraoui, who later blew themselves up; Bakraoui's brother, Khalid, attacked the Brussels subway, per NBC News. Authorities now say he was pushing luggage containing a 35-pound bomb that failed to explode.