Residents were evacuated immediately and dozens of ambulances and police officers were at the scene in the evening, Canadian media said.
While it suffers far fewer mass shootings than its American neighbor, Canada has experienced an upsurge in gun violence, which has prompted it to recently legislate to ban handguns.
In April 2020, a gunman disguised as a policeman killed 22 people in the eastern province of Nova Scotia, Canada's worst mass shooting.
In September this year, a man killed 11 people and stabbed 18 others, mainly in an isolated indigenous community in Saskatchewan province.
Firearms-related violent crimes account for less than three percent of all violent crimes in Canada -- but since 2009 the per capita rate of guns being fired with intent to kill or wound has increased five-fold.
Canada banned 1,500 types of military-grade or assault-style firearms in May 2020, days after the Nova Scotia shooting.
