An external investigation has cleared the head of the European Bank for Reconstruction and Development after assessing claims that the international lender broke rules by collecting information on some of its own directors, Reuters reported.

President Suma Chakrabarti wrote in a letter to staff that the "alleged misconduct did not occur" and Jonathan Charles, EBRD's managing director for communications, said the probe "is now closed."

A number of directors made the complaint against the EBRD in May, the newswire said.

The complaint centered on allegations that board members' personal information was gathered without their consent, and that some internal communications at the bank were "rude, unethical and derogatory," according to Reuters.