Ottawa: Canadian police have warned an aide to slain Khalistani terrorist Hardeep Singh Nijjar, of an increased threat to his life and sent a “duty to warn” notice to him, according to US-based Khalistani leader Gurpatwant Singh Pannun. Inderjeet Singh Gosal, who worked as an aide to Nijjar, received the notice from police in Ontario who are working with the Royal Canadian Mounted Police (RCMP), Pannun said.