Toronto police say two people, a young man and a woman, have been killed after multiple shots were fired at a large outdoor barbecue party in the city's east end.
Police chief Bill Blair said at least 19 people, including an infant, were also injured late Monday in the gunfire and the mass panic that followed.
He calls the incident a "tremendously frightening and tragic event."
Blair says there appears to have been more than one person who fired shots, and says police have at least one "person of interest" in custody.
The shooting took place after an altercation before midnight at the outdoor barbecue.