A Philippine bank on Tuesday accused Bangladesh's central bank of a "massive cover-up" over an $81-million cyber-heist last year, as it rejected allegations it was mostly to blame.

Unidentified hackers shifted $81 million in February last year from the Bangladesh central bank's account with the US Federal Reserve in New York to a Manila branch of the Rizal Commercial Banking Corp (RCBC).

The money was quickly withdrawn and laundered through Manila casinos.

With only a small amount of the stolen money recovered and frustration building in Dhaka, Bangladesh's Finance Minister A.M.A Muhith said over the weekend he wanted to "wipe out" RCBC. 

RCBC on Tuesday said Muhith's remarks were "extremely irresponsible".