Gunfire broke out during outdoor homecoming celebrations at Lincoln University in Pennsylvania on Saturday night, 25 October, leaving one person dead and six others injured, according to authorities.

Police detained a person who had a firearm and are investigating whether more than one individual was involved, though officials said there is no ongoing threat to the campus.

The shooting occurred near the school’s International Cultural Center, where students and alumni had gathered after a football game.

Chester County District Attorney Christopher de Barrena-Sarobe said the celebration was suddenly shattered by gunfire, causing chaos as people fled in all directions.

He added that investigators still don’t know exactly what happened but do not believe it was a planned attack intended to cause mass harm on campus.