The Philippines has filed charges against five officials of RCBC bank and a former treasurer who "wilfully ignored" suspicious activity that led to tens of millions of dollars vanishing after a heist on Bangladesh's central bank.

Unknown cybercriminals tried to steal nearly $1 billion from the Bangladesh Bank in February in what was one of the biggest bank heists ever.

They succeeded in transferring some $81 million via an account at the New York Federal Reserve to four accounts in fake names at a branch of Rizal Commercial Banking Corp. in Manila. Most of the cash was quickly withdrawn and laundered through multiple channels.