Malaysian Prime Minister Najib Razak has axed his deputy in a Cabinet reshuffle and sacked the attorney general, who heads a task force investigating allegations that Najib received some $700 million in government money.

Najib is under increasing pressure over leaked confidential documents that allegedly show that money from state investment fund 1MDB into his personal accounts.

Najib announced over national television Tuesday that his deputy Muhyiddin Yassin will be replaced by Ahmad Zahid Hamidi, the former home minister. He also dropped four other ministers to strengthen his administration and ensure they can "work as a team."

Earlier Tuesday, the government announced it had terminated the services of Attorney General Abdul Gani Patail due to health reasons. Gani however, reportedly said he was unaware of his sacking.