UPDATE, 9:18 a.m.: The lockdown at Chester High School reportedly has been lifted. Police continue to investigate.
Original article:Chester High School was placed on lockdown Monday morning following a report of gunfire.
The gunfire happened near the Delaware County school's West Ninth Street campus about 8 a.m., NBC10 reported.
There were no reports of injuries to students.
Chester Police Commissioner Joseph Bail confirmed the school lockdown.