Sorry for the g*mer link.

Here's some more links too:

French but live stream: https://www.tvanouvelles.ca/2020/11/13/operation-policiere-lhelicoptere-tva-nouvelles-survole-le-secteur
https://www.journaldemontreal.com/2020/11/13/possible-prise-dotages-chez-ubisoft-a-montreal

CBC: https://www.cbc.ca/news/canada/montreal/montreal-police-ubisoft-1.5801236

Now reporting it's a possible hoax.... Now saying it was indeed a hoax ("Canular"). Damn entire neighborhood locked down, people on the roof for over an hour.