Former prime minister Dr Mahathir Mohamad has branded BN MPs as hypocrites for insisting on supporting Prime Minister Najib Abdul Razak on the grounds that he has not been convicted of any crime.

Mahathir said the component parties in BN, including Umno, MCA and others know very well that Najib cannot be convicted of any crime because efforts have been made to ensure his alleged wrongdoing will not go to court.

"Their excuse of accepting Najib as prime minister because he was not found guilty is baseless.

"They are actually lying to themselves and the people. They are hypocrites. They know that prosecutors blocking the legal process is wrong," he said in a blog posting today.