A 33-year-old Sikh man was shot dead in the Indian dominated city of Brampton in Toronto.
Devinder Singh Gill was found injured after being shot at on early on Friday morning, police who responded to an emergency call said.
He was rushed to a hospital where he succumbed to his injuries, local daily the Toronto Star reported.
The shooting reportedly occurred after an altercation at a gathering at the house.
"We do not have a suspect description, and we are not even sure how many people we are looking for," Constable Adam Minnion was quoted as saying.
No one has been arrested so far in the case and the weapon used to commit the crime has also not been recovered.