Police say it is investigating former Umno man Isham Jalil over his post calling on the prime minister to sue the financial news.

Zaid Ibrahim says the post of political secretary is a demotion for Shamsul Iskandar Md Akin, whose sacrifice ensured that Anwar Ibrahim could realise his prime ministerial ambitions.

The prime minister dodges an opposition question on whether he will take legal action over the report.

Police repeating tactics used by jailed leader Najib Razak in stopping 1MDB probe, they say.

Saying the allegation involves abuse of power, Rafique Rashid urges Cabinet to question Anwar on the issue surrounding his former political secretary.

On the other hand, the prime minister directed Azam Baki to investigate Dr Mahathir Mohamad, his sons and former finance minister Daim Zainuddin, the report said quoting sources.

Police urged to conduct transparent investigations into two reports containing the names of several people.

Muhammed Yusoff Rawther, who has been in custody since Sept 6, is awaiting trial on his civil suit against the prime minister.