Wisma Putra has lambasted North Korean ambassador Kang Chol for making allegations based on "lies and half-truths" against Malaysia about investigations into the death of Kim Jong-nam at KLIA2 last week.

"These allegations, culled from delusions, lies and half-truths, are the basis from which the ambassador concluded that 'there could be someone else’s hand behind the investigation', and that the 'investigation by the Malaysian police is not for the clarification of the cause of the death and search of the suspect, but it is out of the political aim'.

"When the ambassador was summoned to the Foreign Ministry on Feb 20, it was emphasised by the deputy secretary-general for bilateral affairs that the police investigation has been done impartially without fear or favour. It was also conducted in compliance with Malaysian laws and regulations.

"Any suggestion to the contrary is deeply insulting to Malaysia, as is the suggestion that Malaysia is in collusion with any foreign government," Foreign Minister Anifah Aman said in a statement.