CONWAY, Ark. (AP) — Police officers patrolled the University of Central Arkansas campus early today and classes were canceled after a shooting in an alleyway left two students dead and a third person wounded.

Shots were fired in the heart of the campus Sunday night near a male dormitory and behind the campus police station.

One man fell to the sidewalk along a narrow alley between the dormitory and a fine arts center and died. Police said the two others rushed into the dorm, where paramedics later found them.

University police spokeswoman Lt. Rhonda Swindle had no explanation for the shooting, though she said police questioned one “person of interest” into the early morning hours. She said detectives believed four people were involved in the attack, though no arrest or search warrants had been issued in the case.