Citigroup said in a statement it was "pleased to have these funds returned." Investcorp declined to comment. Citigroup said an employee error caused it to send more than $900 million of its own money in August to a group of lenders expecting an interest payment on behalf of Revlon. The bank last month sued a dozen of the Revlon creditors — including Brigade Capital Management, HPS Investment Partners and Symphony Asset Management — who are trying to hold on to the money as payment of Revlon's debt to them.