Police said they arrested two people—an adult man and a minor.
At around 6:30 p.m. Thursday, police carried out a raid on an apartment at 3095 Linton Avenue, near Hudson Street, where they found what appeared to be a homemade explosive device.
"[The people arrested] will be interviewed by the investigators probably early this morning concerning the search that was conducted at their place and the possible explosive device that was found inside," said Const. Raphael Bergeron of the Montreal police.
Begeron said the case is still under investigation and is not yet clear exactly what charges might be laid.
Residents forced from homes
After receiving the call, police set up a security perimeter around the apartment block, and about 20 people were forced from their homes.
Bergeron said the bomb squad was called in to remove the device, and residents were allowed to return home at around midnight.
He said investigators will be speaking with the people who live in the apartment in the coming hours.