Story highlights The lockdown was lifted after 90 minutesUniversity: Student did the right thing(CNN) A military academy and a university in suburban Philadelphia are locked down. The cause: No, not gunshots -- but bubble wrap. Around 6 p.m. Monday, an Eastern University student called 911 after hearing what she thought was a gunshot. Police from Radnor and Tredyffrin Township showed up and searched the campus. The sound, it turns out, was something else.

Source: CNN September 13, 2016 16:41 UTC