That concludes our live coverage of the aftermath of the shootings in Baton Rouge that killed three police officers on Sunday morning.
You can follow all our latest updates in our main story.
“Today's devastating assault on police officers in Baton Rouge is an assault on all of us. There is no justification for violence, for hate, for attacks on men and women who put their lives on the line every day in service of our families and communities. We must not turn our backs on each other. We must not be indifferent to each other. We must all stand together to reject violence and strengthen our communities.
President Barack Obama is addressing the nation about the shootings.
"Regardless of motive, the deaths of these three brave officers underscores the dangers that police... confront every single day," he said. "We as a nation have to be loud and clear that nothing justifies violence against police officers."
He also warned against inflammatory rhetoric as both political parties prepared to hold conventions this month. "We need to temper our words and open our hearts - all of us," he said.
CBS, CNN and NBC News are reporting the name of Baton Rouge gunman as Gavin Long, 29, of Kansas City, Missouri.
This has not been officially confirmed by police.
“The movement began as a call to end violence,” prominent Black Lives Matter activist DeRay Mckesson told the New York Times on Sunday. "That call remains."
Mr Mckesson was arrested earlier this month protesting over the death of Alton Sterling in Baton Rouge. Mr Mckesson was released several hours later after the charges against him and scores of other people were dropped.
Louisiana officials held a brief press conference on Tuesday, but they offered few details and did not take questions from the reporters.
What we don't know:
Louisiana State Police Superintendent Mike Edmonson gave some details about the police officers who were killed. He said two were Baton Rouge police officers and one was an East Baton Rouge Parish Sheriff's Office deputy. Mr Edmonson said all three were married and had family.
Baton Rouge Police Chief Carl Dabadie described his officers:
The motive for the attack is unclear but some conservatives believe President Barack Obama, who is due to speak shortly, must do more to support the police.
Earlier, the president released a statement condemning the shooting as "the work of cowards".
Louisiana State Police Superintendent Mike Edmonson said the gunman who shot the officers has been killed and the situation is no longer "active".
Reports earlier had suggested there was more than one gunman.
Mr Edmonson said the officers were responding to a report of a man carrying a rifle along a major motorway. He said the gunman was dressed all in black.
For the second time in two weeks, multiple law enforcement officers have been killed in the line of duty. There is no place in the United States for such appalling violence, and I condemn these acts in the strongest possible terms.
President Barack Obama plans to deliver a statement on the Baton Rouge shootings at 16:30 EDT/21:30 BST.
The White House also said that President Obama contacted Louisiana Governor John Bel Edwards and Baton Rouge Mayor Kip Holden to hear the latest on the investigation. Mr Obama offered the full assistance of the federal government to local authorities.
Louisiana officials also plan to hold a new conference at 16:00 EDT/21:00 BST.
The local sheriff's office and a witness have told local media that police were responding to a shooting already in progress, placing doubt on whether the officers were purposely targeted.
Police across the US have been on high alert after five Dallas police officers were killed during a protest. They were singled out because they were police. However, the motive for Sunday's shooting in Baton Rouge is unclear.
"It's my understanding that they [the officers] had responded to an initial shooting incident," Casey Rayborn Hicks, public affairs officer for the sheriff's office, told local TV station WAFB.
Witness Brady Vancel told WAFB that he saw what may have been gang members shooting at each other before police arrived.
Some had urged the governor to tighten gun rules at the Republican National Convention in Cleveland after three police officers were killed in Baton Rouge, Louisiana. Five police officers were killed a week earlier in Dallas, Texas.
The law in Ohio is that people can openly carry a gun if they have a permit.
Thousands of police officers will be providing security for the Republican National Convention this week.
"I think it was an ambush." Baton Rouge Mayor Kip Holden told Fox News in a telephone interview. "It's a sad commentary when people have no respect for life and they have no respect for police."
Republican presidential candidate Donald Trump has continued to respond on social media to the attack.
Police in Louisiana said they have used a robot to check for explosives near the body of the suspect who was shot and killed.
A week earlier, Dallas Police used a similar robot to kill a gunman who had holed himself up in a multi-storey car park. Micah Johnson had shot and killed five police officers during a Black Lives Matter protest.
In many states, hate crime laws call for additional penalties for those convicted of crimes who targeted victims on the basis of race, ethnicity or religion. Targeting police officers, firefighters and emergency medical service personnel now fall under Louisiana’s hate crime law.
“The men and women who put their lives on the line every day, often under very dangerous circumstances are true heroes and they deserve every protection that we can give them,” [Governor John Bel] Edwards, the son of a sheriff, said in a statement. “They serve and protect our communities and our families. The overarching message is that hate crimes will not be tolerated in Louisiana.”
It's a very confused picture right now in Baton Rouge. Here's what we can confirm:
We've done a full round-up of the facts so far.
In Dallas, where five police were killed recently, Mayor Mike Rawlings also made a statement:
"Reports out of Baton Rouge this morning of three officers killed and others wounded are deeply disturbing. This must stop. Violence against our police officers under any circumstances is not acceptable and poses a grave threat to all of us. Those peacefully protesting police across the country must swiftly condemn this type of violence against law enforcement."
A huge security operation is under way in Cleveland, Ohio, on the eve of the four-day Republican National Convention. But some are questioning whether it's wise that it's legal, with the appropriate permit, to openly carry a weapon in the state of Ohio.
Police Cpl L'Jean Mckneely Jr confirmed three officers are dead and one suspect is dead, and appealed for more information.
This is an unspeakable and unjustified attack on all of us at the a time when we need unity and healing. Rest assured, every resource available to the state of Louisiana will be used to ensure the perpetrators are swiftly brought to justice.
In addition to the three officers killed, several others were wounded. Reuters news agency reports that one is in a critical condition while another is in a fair condition at Our Lady of the Lake Hospital in Baton Rouge. A third officer is being treated at Baton Rouge General Hospital. His injuries are not said to be life-threatening.
Four people - including a 12-year-old boy - were arrested late last week after Baton Rouge Police said they broke into a pawn shop and sought to steal handguns in a plot to attack police.
The White House has been in contact with officials in Baton Rouge and has offered any assistance necessary, Reuters reports.
The mayor of Baton Rouge, Kip Holden, tells a local TV station that the "rhetoric from some people" during and after the funeral of Alton Sterling may be connected to the shootings that left three officers dead.
Mr Sterling, who was 37, was a black man who was shot dead by two white police officers on 6 July.
Demonstrations broke out in Baton Rouge and across the world after he and another black man, Philando Castile, were shot by police and videos of the aftermath were shared worldwide.
Mayor Holden said: "I'm not sure whether this is related to the protests but from some of the people who've spoken during the course of the funeral and the whole week, people are like they want to light fire on people and pour gasoline on it, I have to believe that some of that has been related to this. These minds have been overtaken by people.
"Everything's been anti-police but the overwhelming percentage of people in Baton Rouge are not buying in to that rhetoric."
The shooting happened near police headquarters and Airline Highway in Baton Rouge, the capital of the state of Louisiana.
Mobile phone footage from the scene showed police cars arriving at a road intersection. Several shots were then heard.
The shootings in Baton Rogue come a week after five police officers were killed in Dallas, putting departments across the country on high alert. The Dallas gunman Micah Xavier Johnson told police before he was killed that he purposely targeted the officers. Johnson said he was angry about recent shootings of black men at the hands of police in Baton Rouge, Louisiana, and Minneapolis, Minnesota. The motive in the latest Baton Rouge shooting is unclear.
A reporter in Baton Rouge describes a "very active scene".