Canada's Prime Minister Justin Trudeau says the Indian government could be behind the fatal shooting of Canadian Sikh leader Hardeep Singh Nijjar.
Mr. Nijjar was shot dead outside of a Sikh temple on June 18 in British Columbia.
Mr. Trudeau said Canadian intelligence has identified a "credible" link between his death and the Indian state.
He raised the issue with Indian Prime Minister Narendra Modi at the recent G20 summit.
Prime Minister Trudeau, today, in the House of Commons said any involvement of a foreign government in the killing of a Canadian citizen on Canadian soil is an unacceptable violation of the country's sovereignty.
India has previously denied any involvement with Mr. Nijjar's murder. Canada also expelled an Indian diplomat earlier over the case.
The Indian embassy in Canada nor the High Commission of India in Ottawa are yet to comment on the matter.
Officials remain tightlipped due to the ongoing homicide investigation into Mr. Nijjar's death.
Mr. Nijjar was killed in his vehicle by two masked gunmen in a parking lot of the temple in Surrey, about 18 miles east of Vancouver.
He was a prominent Sikh leader in the province of British Columbia and a vocal backer of Khalistan - a separate homeland for Sikhs in the Punjab region of India.
His supporters have said that he was a target of threats in the past because of his activism.
The unsolved murder in Canada is fueling rifts with India. Prime Minister Trudeau says he has also raised the matter with US President Joe Biden and UK Prime Minister Rishi Sunak.