Ottawa, Canada ---Canada on Monday accused India's government of involvement in the killing of a Canadian Sikh leader near Vancouver last June, and expelled New Delhi's intelligence chief in Ottawa in retaliation. The diplomatic move sent relations between Ottawa and New Delhi, already sour, to a dramatic new low. Prime Minister Justin Trudeau told an emergency session of the parliamentary opposition at mid-afternoon that his government had "credible allegations" linking Indian agents to the slaying of an exiled Sikh leader, Hardeep Singh Nijjar, in June in British Columbia. "The involvement of any foreign government in the murder of a Canadian citizen on...Keep on reading: Canada links India to slaying of Sikh exile, expels intel chief