Oregon gunman killed committed suicide as police arrived

Police search students outside Umpqua Community College in Roseburg, Ore., Thursday, Oct. 1, 2015, following a deadly shooting at the college. (Mike Sullivan/Roseburg News-Review via AP)

ROSEBURG, OREGON (KTVU) -- The gunman in the Umpqua Community College mass shooting killed himself, as police arrived, authorities announced Saturday.