The Malaysian government has appointed Singapore law firm Tan Rajah & Cheah to sue 53 individuals and companies to recover funds belonging to tainted state fund 1MDB that have been seized by Singapore.

Malaysian Prime Minister Mahathir Mohamad’s new government will review political representation in the country’s largest government-linked investment firms, including the main sovereign and state pension funds, the funds have said.

Mahathir Mohamad, who pulled off a stunning general election win, was not sworn in as the new prime minister of Malaysia on May 10, a spokesman for the King’s palace said, but gave no reason for the change in schedule.