Oregon Campus Shooter Killed Himself

The shooter behind the deadly rampage at Umpqua Community College in Roseburg, Oregon, apparently committed suicide after exchanging gunfire with officers, Douglas County Sheriff John Hanlin said Saturday, reports CNN .

A timeline released by investigators shows that the first 911 call about the Thursday's shooting came at 10:38 a.m.

Six minutes later, Hanlin said, two Roseburg police officers and a state trooper arrived on the scene. At 10:46 a.m., the officers exchanged gunfire with Harper-Mercer. Two minutes later, there was a report of "suspect down," according to the timeline.

Hanlin said the state medical examiner determined the gunman's death was a suicide. State police are investigating the shootout.