The RBS banking group has withheld bonuses from 18 of the staff it is investigating for their possible role in rigging the foreign exchange market.
The bank has been conducting its own inquiry into the affair and six staff are already being disciplined.
RBS has been looking at more than 50 former and current RBS traders along with dozens of managers and executives.
The bank was recently fined £400m by the UK and US authorities for its role in the scandal which emerged in 2012.
RBS was one of six banks that were fined £2.6bn last month by the UK, US and Swiss authorities after being found g