RADNOR TWP., Pennsylvania (WPVI) -- A lockdown was lifted at Archbishop Carroll High School after Radnor Township police said no weapon was found on campus.
The school was placed on lockdown around 11:50 a.m. Wednesday. The lockdown was lifted around 12:20 p.m.
According to police, all the students are safe and classes have resumed.
Police said a person was being questioned for investigative purposes, but that no charges were pending.
Parents will be notified as soon as possible on updates on the investigation, police said.