The shooting took place at 22:39 on Friday local time (03:39 GMT Saturday) near Scarborough city centre in eastern Toronto.
Authorities said six people suffered bullet wounds and others were hurt by flying or broken glass. The injuries were not life-threatening, they said.
Toronto police said the three men had entered the pub and “opened fire indiscriminately”. They had been armed with an assault rifle and handguns.
A motive “right now remains unclear and we’re chasing down all leads”, said Police Supt Paul MacIntyre.
…………. ………….. ……. ……………. Mayor Olivia Chow expressed deep concern over the mass shooting, telling reporters on Saturday that she was “deeply troubled” by the incident.
“It is troubling because of the magnitude of the shooting and the number of people hurt,” Mayor Chow said.
She said that police have been actively investigating the case throughout the night and into the morning.
Ontario Premier Doug Ford also condemned the violence, stating in an X post on Saturday that he fully supports the Toronto Police Service in their search for the suspects.
The number of those injured in this incident is high compared to other shootings in the area in 2024.
Last year, eight people were injured and two killed in shootings and firearm discharges in the police division where Friday’s incident occurred, the department’s data shows.
In Toronto, which has a three million population, 43 people were killed in shootings last year.
Canada has a lower rate of firearm homicides than its neighbour the US, with 0.6 per 100,000 people compared to 4.5 per 100,000, according to 2021 data from the Institute for Health Metrics and Evaluation.
