Former Malaysian prime minister Najib Razak arrived on Tuesday at the Malaysian Anti-Corruption Commission’s (MACC) headquarters in Putrajaya, where he gave a statement in a probe into a multi-billion dollar corruption scandal linked to debt-ridden state development fund 1Malaysia Development Berhad (1MDB). Death threats, missing witnesses and sackings – these were obstacles faced by the MACC while probing the 1MDB financial scandal in 2015, revealed the agency’s new chief in a dramatic account on Tuesday. Malaysia’s police chief said he will look into allegations by the current MACC chief that he was tailed in the United States at the height of the 1MDB scandal.