Amid the ongoing diplomatic tussle between India and Canada over the assassination of Khalistani separatist leader Hrdeep Singh Nijjar, Canadian Prime Minister Justin Trudeau yesterday underlined that?Canada is still "very serious" about building closer ties with India as it is a growing economic power and important geopolitical player while he also made it very clear that??New Delhi should?work with the Canadaian capital Ottawa to ensure that they get the full facts about the killing of Hardeep Singh Nijjar.