A major police operation is underway in a neighborhood north of downtown Montreal, near the offices of video-game maker Ubisoft. Police officers holding firearms could be seen outside the building on St-Laurent Boulevard in the city's Mile End neighborhood, and at least three ambulances were standing by. A large perimeter has been cordoned off by police tape, and Montreal police are asking people to avoid the area. The police force said on Twitter that officers are currently validating information and more details will follow. A police spokeswoman said they responded to a 9-1-1 call but so far no threat has been detected and there were no immediate reports of injuries. Subscribe to our YouTube channel: https://bit.ly/2TwO8Gm Bloomberg Quicktake brings you live global news and original shows spanning business, technology, politics and culture. Make sense of the stories changing your business and your world. To watch complete coverage on Bloomberg Quicktake 24/7, visit http://www.bloomberg.com/qt/live, or watch on Apple TV, Roku, Samsung Smart TV, Fire TV and Android TV on the Bloomberg app. Connect with us on… YouTube: https://www.youtube.com/user/Bloomberg Breaking News on YouTube: https://www.youtube.com/c/BloombergQuickTakeNews Twitter: https://twitter.com/quicktake Facebook: https://www.facebook.com/quicktake Instagram: https://www.instagram.com/quicktake