After a bomb threat targeting Muslim students forced the evacuation of three buildings at Concordia University's downtown campus, Montreal police arrested a 47-year-old man allegedly linked to the incident.

A letter was emailed to CBC news, and a number of other media outlets, suggesting bombs would be set off at the engineering, computer science and visual arts integrated (EV) complex, and Hall building. The three buildings were evacuated afterwards.

Montreal police, however, said they found nothing suspicious in their search of the buildings and handed the case over to the major crimes division.

The buildings reopened Wednesday afternoon, with classes and exams not being cancelled.

“The suspect sent by email that he put some explosive items inside a few places inside the buildings,” said Montreal police Const. Benoit Boisselle.

Quebec Premier Philippe Couillard stated that when he hear about what was happening at Concordia, his first concern was everyone’s safety.

“It's a despicable act that must be condemned by all of society, but my first concern is safety,” Couillard said.

Montreal police said it will be present outside the campus for the next few days in order to insure the security of the area.

Montreal police Const. Benoit Boisselle said investigators are working to find the source of the threatening emails.