At least four people have been killed in a gun attack in the eastern Canadian city of Fredericton on Friday morning, local police said.
"Please continue to avoid the area", Fredericton police said.
Toronto, Canada's largest city, has had 241 shooting incidents this year, resulting in 30 deaths, a 30 percent increase in fatalities.
"Please appreciate this is a hard time for their families and our colleagues", the force tweeted, adding that more information would be released when they're able.
The circumstances of the shooting in the capital of New Brunswick province, home to about 60,000 people, were not immediately clear.
Police called it an "active incident".
The shooter was identified as Faisal Hussain, 29. They had previously warned the public not to expose the whereabouts of police as they worked to address the situation.
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Police have urged people to avoid the area.
One resident told CBC News that he heard a series of shots ring out around 7 am. "It was sort of like a pop, pop, pop, pop", he said.
Police have also confirmed that they have one suspect in custody.
A worker at a nearby Tim Horton's coffee and doughnut shop revealed staff had locked the doors and are keping customrs insid.
Fredericton is located about 50 miles northeast of the US border with Maine.
At least four people are reported dead, two of them police officers.