India expels Canada diplomat as Sikh murder row escalates

India has expelled a senior Canadian diplomat after Canada's Prime Minister Justin Trudeau suggested Delhi may have been involved in the murder of a Sikh separatist leader.

The escalating row centres on the murder of Hardeep Singh Nijjar, a Canadian citizen shot dead outside a Sikh temple on 18 June in British Columbia.

Trudeau said Canadian intelligence were pursuing "credible allegations" of a link between his death and the Indian state. India has firmly rejected Trudeau's allegations, calling them "absurd" and politically motivated.