The National Anti-Corruption Bureau of Ukraine (NABU) is investigating into crimes committed by some banks that removed refinancing loans abroad, NABU Director Artem Sytnyk has said.

"We have a criminal case concerning some banks that removed the refinancing funds abroad, including via Austrian banks and eventually to offshore companies," he said on Channel 5 TV late on Tuesday.

He did not disclose the names of the banks.

He said that there are not suspects in the case. It is at the initial stage and the movement of the funds is to be tracked.