L-R: Tyrell Okoro; Keith Robertson (NewsOne)

BALTIMORE (AP) — Baltimore police have arrested a 20-year-old Washington man in the shooting of a Morgan State University football player.

Police spokesman Anthony Guglielmi (guh-lee-EHL’-mee) says Keith Robertson confessed to the shooting, which occurred around 1 p.m. Friday near a residence hall.

Robertson was taken into custody shortly after the shooting, when police say he was seen running from the scene. A semi-automatic handgun was recovered nearby.

The victim was 20-year-old Tyrell Okoro, a sophomore offensive lineman on the football team. Guglielmi says detectives believe there was a previous dispute between Robertson and the victim.

Morgan State spokesman Clinton Coleman says Robertson is not a student at the university. Morgan State has an enrollment of about 6,000. There was another nonfatal shooting on the campus in September.

Copyright 2012 The Associated Press.