Toronto police say officers are investigating reports of gunshots fired at Yorkdale Shopping Centre in North York.
In a tweet sent shortly after 3 p.m., police said the mall is in the process of being evacuated after a gun was discharged.
No injuries have been reported.
Police are urging people to avoid the area while they tend to the scene.
Officers say they’re searching for multiple suspects in connection with the gunfire.
The first suspect has been described as a black male in his 20s wearing a black jacket with a hood and blue jeans. The second suspect is described as a male in his 20s with a skinny build, about five-foot-nine and carrying a black handgun.
Few other details have been provided by police at this time.
"We have a very good response of police personnel heading to Yorkdale, investigative as well as primary response and other unit," staff Sgt. Frank Partridge told CP24 via phone.
"It happened such a short time ago I have no feedback from officers in the field."
A large crowd of people has since accumulated outside of the mall. According to reports on Twitter, some shoppers are on lockdown inside stores.
One Twitter user wrote that they were locked inside the Rolex store for safety. Others said they saw people running and realized something was wrong.
"I was at Chapters with my mom when I saw everybody screaming and running out of the mall," one Twitter user, Felipe Lepecki, wrote. "Grabbed my mom and ran to our car. Really hope nobody got hurt."
The TTC says trains on Line 1 are not stopping at Yorkdale Station as a result of ongoing police activity.
Toronto Paramedics say they are on scene but have not treated anyone.
Police are asking anyone who witnessed the shooting to call them at 416-808-3200.
This is a developing story... More to come.