Chester police said the student was shot once in the side by an unknown gunman around 8:45 p.m. Monday and he called 911 himself. The victim wasn't identified and his condition wasn't immediately known, but a nursing supervisor at Crozer Chester Medical Center said Monday night that he was in surgery.
Widener said in a statement on its website that Chester police had secured the campus and did not believe there was an "active shooter" on the campus, but asked students to remain inside until 6 a.m.
Chester police were reviewing surveillance footage and were using K-9 units to track the suspect, who they believe fled into a residential neighborhood adjacent to the athletic complex, on the edge of the campus.
Police told reporters that they found one shell casing on the scene and believe the shooter used a revolver.
Widener University is a private, co-ed university located in Chester, Delaware County, 14 miles south of Philadelphia. The university also has three other campuses in Harrisburg, Exton and Wilmington, Del.