Here are the latest developments in the Oregon high school shooting that resulted in the death of 14-year-old Reynolds High School freshman Emilio Hoffman: 
 
 Gunman: Police have identified 15-year-old Reynolds High School freshman Jared Michael Padgett as the shooter. He died of a self-inflicted gunshot wound from an AR-15 rifle, police said. He also carried a semi-automatic handgun and nine loaded magazines with the capability of holding several hundred rounds. Read more » 
 
 Victim: Padgett shot and killed 14-year-old Reynolds High School freshman Emilio Hoffman in the boys locker room Tuesday morning. Hoffman was getting ready for an advanced P.E. class. Read more » 
 
 Teacher hero: Reynolds teacher Todd Rispler was grazed by a bullet fired by Padgett, but he still managed to sprint to the school office and sound the alert that there was an active shooter in the building. Read more » 
 
 Here are running updates as the investigation into the shooting continues to unfold: 
 
 3:40 p.m.: The Oregonian's Maxine Bernstein has the most complete account yet of how Tuesday morning's shooting transpired: 
 
 Jared Padgett walked into the gymnasium building, a detached structure on the east end of the Troutdale school, and entered the boys locker room. There, he suited up in or near a bathroom stall, putting on a non-ballistic vest to hold nine magazines of ammunition and a multi-sport camouflage helmet. He removed the AR-15 rifle he had stashed in his guitar case. Freshman Emilio Hoffman, 14, just happened to walk into the locker room and encountered Padgett as he was still suiting up or about to walk out, law enforcement sources said. Padgett shot Hoffman twice in the chest with the rifle, said Dr. Larry Lewman, deputy state medical examiner. Hoffman died at the scene from the high-velocity rounds. 
 
 3:05 p.m.: The Oregonian's Helen Jung interviewed Reynolds High School freshman Kaylah Ensign, a close friend of shooting victim Emilio Hoffman: 
 
 Ensign recalled heading to the gym on Tuesday for the advanced physical education class she took along with Hoffman. He got there, she said, before the others. Ensign said before she and others got to the gym, a teacher was yelling at them to run. "Next thing I know, I was under a table in the classroom," she said. As students learned from social media what was going on, "everyone started texting their parents 'I love you,'" she said. 
 
 2:35 p.m.: Emilio Hoffman's mother, Jennifer Hoffman, just issued a statement. Here's an excerpt: 
 
 When we attended the candlelight vigil last night, we were humbled by the response from his friends, teachers and community. Emilio loved his friends, and his friends loved him. 
 
 
 
 To those friends we say - be happy like Emilio. Smile like him. Laugh like him. 
 
 
 
 To the parents out there - Love your kids. Hug your kids every day. And live with no regrets. I don't have any regrets with Emilio. None. And he knew that. 
 
 1:50: James Reddick reports that Troutdale police have identified the man arrested for possession of a handgun during the shooting investigation at Reynolds High School as Joseff Powell, 21, of Gresham. Powell was "in the area of the school" when he was searched by officers during the evacuation. 
 
 1:20 p.m.: The Oregonian's Beth Nakamura spoke with Jared Padgett's neighbor, Jose Garcia, who rode the bus with Padgett Tuesday morning to Reynolds High School. In the video at right, Garcia talks about having noticed the bags Badgett was carrying, including the guitar case that contained the AR-15 rifle. 
 
 12:45 p.m.: Laura Gunderson has more on Jared Padgett: 
 
 Jared Michael Padgett was known by his classmates as a quiet student with a need for order and a fascination with guns of all types. 
 
 "He was one of those organized people who liked order, liked everything to be really perfect," said Agustin Guzman, a 16-year-old who attended Reynolds' Junior Reserve Officers' Training Corps with Padgett at the beginning of this school year. 
 
 12:25 p.m.: Correction: The Reynolds High School graduation is still scheduled for 7 p.m. Thursday night at Reynolds. The Reynolds Learning Academy Graduation has been rescheduled for Thursday, June 26 at 7 p.m. at the Melody Ballroom. 
 
 11:45 a.m.: More details on Padgett from the press conference: 
 
 He used an "AR-15 type rifle" in the attack and carried, but did not use, a semi-automatic handgun. Investigators also recovered nine loaded magazines with the capability of holding several hundred rounds. 
 
 He had a large knife and was wearing a non-ballistic vest used for carrying ammunition and other items. He also was wearing a multi-sport helmet with a camouflage design. 
 
 Padgett obtained the weapons from his family home. The weapons had been secured, but he defeated the security measures. 
 
 11:15 a.m.: Police have identified the shooter as 15-year-old Reynolds High School freshman Jared Michael Padgett. The shooter died of a self-inflicted gunshot wound from an AR-15 rifle, police said. He also carried a semi-automatic handgun. Troutdale police said Padgett obtained the weapons from his own home. 
 
 11:10 a.m.: The press conference will start at 11:15 a.m. We will have live coverage of the news conference at the Troutdale Police Department, including live updates and live video (see below). Follow Maxine Bernstein on Twitter for real-time updates: 
 
 Tweets by @maxoregonian 
 
 9:45 a.m.: Autopsy details from The Oregonian's Maxine Bernstein: The state medical examiner's office is conducting autopsies Wednesday morning of Hoffman and the shooter, a former student who authorities have not yet identified publicly. 
 
 Police dispatch reports captured an officer at the scene saying it appeared the shooter died of a self-inflicted wound, but Troutdale police Chief Scott Anderson Tuesday said that had not been confirmed. Investigators are awaiting the results of his autopsy. 
 
 8:45 a.m.: CNN is reporting the shooter had an AR-15 and a brown paper bag filled with more than 20 fully-loaded magazines. 
 
 The Oregonian's Les Zaitz reports federal agents are tracing the history of the weapon used in the fatal shooting. 
 
 8 a.m.: Police have scheduled a press conference for 11 a.m. We will have live updates and video from the scene. 
 
 7 a.m.: Who was the shooter? This is the primary question we are pursuing today. 
 
 6:45 a.m.: Lynne Terry has the story on how Reynolds teacher Todd Rispler, who was grazed by a bullet, still managed to sound the alert that someone was shooting a rifle inside Reynolds High School. 
 
 6:30 a.m.: Gov. John Kitzhaber attended a vigil for Hoffman late Tuesday evening at Walt Morey Middle School. 
 
 6 a.m.: Several details have been confirmed surrounding Tuesday's shooting, while many details are still unconfirmed by law enforcement officials. Here's a full account of what we know about the school shooting. 
 
 Stay with us for more coverage of the Reynolds High School shooting. We will keep this post updated with the latest developments throughout Wednesday. 

 (CNN) -- The scenes are depressingly familiar. 
 
 A gunman opens fire on an American campus. Students, teachers and administrators duck for cover. Parents anxiously wait for their kids to check in, praying for the phone to ring. 
 
 It played out again Tuesday at Reynolds High School in Troutdale, Oregon, a city of 16,400 people 12 miles east of Portland. 
 
 Jared Padgett, a student at the school, shot and killed another student before taking his own life. 
 
 The 15-year-old Padgett arrived at school on a bus, carrying a guitar case and a duffel bag, Troutdale Police Chief Scott Anderson told reporters Wednesday. 
 
 The freshman student had an AR-15 type rifle, a semi-automatic handgun, nine loaded magazines capable of holding several hundred rounds, and a large knife, Anderson said. 
 
 Authorities have found no link between Padgett and his victim, 14-year-old freshman, Emilio Hoffman, and no known motive. 
 
 Padgett shot and killed Hoffman in a locker room. He also shot and wounded a teacher. 
 
 Padgett then moved through a main hallway, where he ducked into a small restroom as officers closed in, Anderson said. 
 
 There was a brief exchange of gunfire, but, based on autopsy reports, Padgett died of a self-inflicted gunshot wound. 
 
 "Given the weapons and the amount of ammunition that the shooter was carrying, the early notification and the initial law enforcement response were critical," the police chief said. 
 
 The school shooting, the second in a week, is the latest in a long string. An attack at Seattle Pacific University last week killed one person and wounded two others. 
 
 Timeline of U.S. school violence 
 
 Speaking in Washington, President Barack Obama said the nation should be ashamed of its inability to get tougher gun restrictions through Congress in the aftermath of mass shootings that he said have become commonplace in America.
– Police still don't know why 15-year-old Jared Padgett shot and killed a fellow student at Reynolds High School in Oregon yesterday, only that Padgett seemed intent on killing many more people. Padgett brought an AR-15 rifle to school in a guitar case, right on the school bus, reports KOIN-TV. He also had a semiautomatic handgun, though he didn't use it, along with a large knife, a camouflage helmet, an ammo vest, and nine loaded magazines with several hundred rounds, reports the Oregonian. Authorities say he brought the weapons from home, after foiling a security system that secured them. Padgett encountered his victim, 14-year-old Emilio Hoffman, in a locker room and fatally shot him. Police say they don't know of any connection between the two boys, reports CNN. A teacher grazed by a bullet, Todd Rispler, managed to sound the alarm, and Padgett killed himself inside a bathroom as security officers closed in, say police. “I cannot emphasize enough the role Mr. Rispler played,” says the police chief in Troutdale.