Canadian Prime Minister Justin Trudeau has doubled down on his explosive charge that "Indian government agents" were behind the murder of Khalistani Sikh leader Hardeep Singh Nijjar.

Addressing a news conference along with Ukranian President Volodymyr Zelenskiy in Ottawa, Trudeau revealed such "credible allegations were shared with India weeks ago.

In regards to India, Canada has shared the credible allegations that i talked about on Monday (September 18) with India. We did that many weeks ago and we are there to work constructively with India, and we hope that they engage with us so that we can get to the bottom of this very serious matter.

Trudeau added Canada is seeking to work constructively with India on the matter. The Canadian PM on Thursday in New York on the sidelines of un general assembly called New Delhi to cooperate in the probe.

Trudeau had first linked Nijjar's killing to India on Monday. New Delhi denied the charge. The allegation triggered tit-for-tat moves like expelling diplomats that escalated underlying tensions to a major diplomatic crisis between the two countries.