(CNN) — At least one person was killed and six others injured in a shooting at Pennsylvania’s Lincoln University Saturday night, during the historically Black university’s Homecoming weekend, according to officials.

A total of seven people were hit with gunfire after shots rang out near the school’s International Cultural Center, where Homecoming crowds were celebrating after that afternoon’s football game, authorities said at news conference early Sunday.

“That festivity was interrupted and decimated by gunfire. It was a chaotic scene, and people fled in every direction,” Chester County District Attorney Christopher de Barrena-Sarobe said.

Officials did not give details on the conditions of the six injured. Multiple gunshot victims were taken to hospitals in nearby Delaware, authorities told CNN earlier.

Several others were treated at the scene after being knocked to the ground and trampled as people ran for cover, de Barrena-Sarobe said.

A motive in the shooting has yet to be determined, but de Barrena-Sarobe said it does not appear to be a case “where someone came in with the design to inflict mass damage on a college campus.”

One person who was carrying a gun has been detained, the district attorney said, noting investigators are still piecing together information.

“We don’t have a lot of answers about exactly what happened,” he said, noting it is possible there were multiple shooters.

Local, state and federal law enforcement are investigating, the district attorney’s office said in a statement, asking anyone with knowledge of the shooting to contact the FBI.

Lincoln University is located about 55 miles west of Philadelphia. The school’s website says it is “the nation’s first degree-granting Historically Black College and University.”