Prime Minister Dr Mahathir Mohamad has no plans to hand the Public Accounts Committee (PAC) chairperson's position back to the opposition although its current chief Ronald Kiandee (above) joined his ruling party Bersatu.

Mahathir said Pakatan Harapan's promise for the PAC to be headed by the opposition is "only policy, and not institutionalised or part of the constitution".

"He (Ronald) will be there (as PAC chief)," he said at a press conference in Putrajaya after welcoming Ronald into Bersatu.

The opposition coalition BN had nominated Parit Sulong MP Noraini Ahmad to take over as PAC chief.

However, Mahathir said they would need majority support to make this change.

Ronald told reporters later that he will abide by the prime minister’s decision that he need not resign.

He said similarly, he would "definitely" step down if asked to do so by the prime minister.

Putting the opposition in charge of the PAC was one of Harapan's election manifesto promises.

When it was still in the opposition, the coalition had criticised how the BN government and its then PAC chief Hassan Arifin had stymied the committee's probe into 1MDB.