• Louisiana State Police Col. Mike Edmonson announces the death of Trooper Steven Vincent, Monday, Aug. 24, 2015 during a news conference at Lake Charles Memorial Hospital in Lake Charles, La. Vincent was shot in the head Sunday night near Bell City during a traffic stop. (Rick Hickman/Lake Charles American Press via AP)

    AP Exclusive: Man who tackled shooting suspect: I’m no hero

    BATON ROUGE, La. (AP) — The man accused of gunning down a Louisiana state trooper who stopped to offer him roadside assistance spent much of the past two decades in and out of prison, including a stint for setting his mother’s house on fire.