Hardeep Singh Nijjar was shot and killed on 18 June 2023 in the parking lot of Guru Nanak Sikh Gurdwara in Surrey, British Columbia. Nijjar was a Canadian Sikh involved in the Khalistan movement and was president of the gurdwara.

In September 2023, Canadian Prime Minister Justin Trudeau said Canadian intelligence agencies were pursuing credible allegations of a potential link between Indian government agents and the killing. India rejected the claims as absurd. The dispute led to diplomatic expulsions and a rupture in Canada–India relations.