Following a series of salvoes from former premier Dr Mahathir Mohamad, attorney-general (AG) Apandi Ali today questioned if the former's utterances were in accordance with teachings of Islam.

Apandi was responding to Mahathir’s latest blog post in which he said the AG's decision to clear Prime Minister Najib Abdul Razak of any wrongdoing in relation to 1MDB 'means nothing' as he had 'no credibility'.

"He is entitled to his opinion but I doubt if his utterances are in accordance to the true teachings of Islam," Apandi reportedly told The Malaysian Insider in a WhatsApp message.

This is the first time Apandi has responded to critics who raised concerns over his announcement last week that would be no further action on the MACC’s probe into RM42 million from SRC International and the RM2.6 billion donation deposited into Najib Razak’s personal bank accounts.

Over the past few days, Mahathir had intensified his attacks on Najib and zeroed in on Apandi’s role as AG in relation to the allegations surrounding 1MDB.

On Tuesday, Mahathir had reportedly told The Financial Times that Apandi was under the control of Najib following his decision not to frame charges against the prime minister.

"I think the attorney-general is under the control of the subject of the investigation, the prime minister," Mahathir was quoted as saying.

He also dismissed as 'nonsense' Apandi’s reason to not take action against Najib as the US$681 million was a ' personal donation from the Saudi royal family given to him (Najib) without any consideration'.

On Wednesday, Mahathir said that Apandi owed his position to Najib who appointed him after allegedly making 'false representations' to the Yang di-Pertuan Agong.