Former prime minister Dr Mahathir Mohamad today supported widely-speculated claims of a cabinet reshuffle but said the first person to be removed should be Prime Minister Najib Abdul Razak.

"There should be a reshuffle with the first person to go being the prime minister," he told a press conference in Kuala Lumpur this evening.

He was responding to news reports that a cabinet reshuffle was on the cards, after a few ministers voiced dissent against Najib's management of 1MDB.

However, Tourism Minister Nazri Abdul Aziz ( photo ) dismissed the likelihood of any cabinet reshuffle.

Nazri also slammed Mahathir for attacking Najib's administration, labelling his views as unimportant.

However, Mahathir today shot back at Nazri, saying the latter could not differentiate between right and wrong.

"Losing money is not important, it's only a few billion, we are a rich country.

"We borrow RM42 billion and lose part of it, that's okay, we can borrow some more, " he said sarcastically.