1Malaysia Development Bhd (1MDB) is a state investment fund that came under investigation for alleged impropriety in July 2015, after reports emerged that investigators traced some US$700 million wired into Prime Minister Najib’s bank accounts. Both the fund and the premier denied wrongdoing, but the attorney general launched an investigation into alleged graft. 1MDB was 42 billion ringgit (HK$86 billion) in debt at the time of the scandal.