The Criminal Investigation Department's (CID) investigation also found evidence of negligence by Bangladesh Bank officials, according to CID Additional Deputy Inspector General Shah Alam.
"The names of 20 Filipino, Sri Lankan and Chinese nationals came up during our official visits to the countries regarding the heist. We might again visit the countries but we cannot disclose the names right now for the sake of the investigation," Alam told reporters here.
CID said they do not want to disclose information whether any Bangladeshis are involved in the reserve heist incident.
On the negligence of central bank officials, the CID official said investigators are now trying to find out whether it was out of criminal intent or because of their incompetence.
Also Read
The hacking took place on the night of February 4, using information stolen through the malware, which sent a total of 35 transfer orders to the New York's Federal Reserve Bank where the Bangladesh's central bank has an account.
Bangladesh central bank governor Atiur Rahman, his two deputies and the country's top banking bureaucrat lost their jobs following the theft that has raised serious questions over the safety of its foreign exchange reserves of over USD 27 billion.