A library at Temple University was evacuated on Tuesday after a student's electronics project was mistaken for a suspicious device.
The Samuel L. Paley Library along Polett Walk near 13th and Berks Streets in North Philadelphia was evacuated around 2 p.m., university officials said.
The Philadelphia Police Bomb Squad was called to the scene and deployed a robot.
However, after about 20 minutes, officials determined that the device was not harmful and gave the all clear, allowing students and staff back into the building around 2:30 p.m.
A Temple spokesman tells NBC10.com the package was an electronics project that was left unattended inside the library.
Tuesday's incident was the second is as many days. On Sunday, The Conwell Inn, an on-campus hotel, was evacuated after a device resembling a grenade was found. The bomb squad disposed of the device and determined it was a movie prop left behind from a shoot involving students from another university.