Multiple people were shot on Lincoln University of Pennsylvania’s campus during Homecoming weekend, the Chester County District Attorney said Saturday night.

The Chester County District Attorney’s Office said in a statement that they are aware of a shooting with multiple victims that occurred at Lincoln and law enforcement has responded to the scene, and actively investigating.

The DA’s office is asking people to avoid the area as surrounding roads have been blocked off.

The shooting happened just after 9 p.m. during the school’s tailgate and yardfest event near the football field. The school is located on Baltimore Pike in western Chester County, about 50 miles from Philadelphia.

CBS News Philadelphia spoke to a witness who said he saw one person receiving CPR.

This is a developing story. Please check back for updates.