( CNN ) -- NEW : A fourth and final suspect has turned himself in , police say . The man was arrested at a home on the 200 block of North Main Street around 1:30 a.m. Two students killed , one wounded Sunday night , officials say . Shooting prompted lockdown at University of Central Arkansas in Conway .
NEW : A fourth and final suspect has turned himself in , police say . The man was arrested at a home on the 200 block of North Main Street around 1:30 a.m. Two students killed , one wounded Sunday night , officials say . Shooting prompted lockdown at University of Central Arkansas in Conway .