Friday morning around 8 a.m., Wilfrid Laurier’s Waterloo campus was put on a lockdown. Waterloo regional police were contacted by the university’s police after Crime Stoppers gave them a tip threatening the school’s science building.

The police have not revealed what the threat was yet, but lifted the lockdown on the school later the same day, at about 11:45am. Police are also said to be working with the RCMP and the FBI on this matter.

Later Saturday, an email was sent out to Wilfrid Laurier University staff, faculty, and students saying, “A suspect has been arrested in London, UK in relation to the online threat leading to the lockdown of the Waterloo campus.”

The lockdown cancelled any classes or meetings and closed all buildings on campus. After the lockdown was lifted, faculty and staff were not required to return to work.

Wilfrid Laurier’s reading week was going on when the lockdown occurred. However, campus police made sure anyone who stayed on campus knew about the lockdown and were being updated on anything that may have affected them.

According to some social media sites, the threat could have come from the online forum of 4chan. An anonymous poster recommended that fellow 4chan-ers keep away from the “Laurier science building hall”.

The university’s emergency notification system sent this message out to anyone subscribed to get notifications, “WLU Waterloo Campus on lockdown. All buildings closed. Classes, meetings cancelled. Details as available.”

The nearby University of Waterloo stayed open. “We are open and are continuously monitoring the situation at Wilfrid Laurier. Currently no evidence of threat at #UWaterloo.” said the University of Waterloo’s twitter page early on Friday morning.

Classes and meetings are now resumed and the buildings are open again.