Former premier and now the government's biggest critic Dr Mahathir Mohamad laughed off claims that the opposition was behind the United States Department of Justice's filing in the 1MDB case.

In fact, the Parti Pribumi Bersatu Malaysia chairperson said he has never even met a US official on the matter.

"I have never met any American official but certainly the opposition has no influence at all over investigations, detailed investigations carried out by the US government," he told Channel News Asia in an interview today.

"I'm flattered that you should think that we have influence over the US government. You know nobody has any influence over the US government. Even (US President Donald) Trump is finding difficulty," he said.

Yesterday, Minister in the Prime Minister's Department Abdul Rahman Dahlan said the DOJ must reveal the complainant to expose the political motives behind the filing...