U.S. federal prosecutors earlier this year reviewed whistleblower allegations against JPMorgan Chase, claiming that the bank's executives ignored flaws in its anti-fraud program and allegedly improperly refused to pay over $100 million in compensation to customers who suffered financial fraud, according to people familiar with the matter. These allegations stem from a whistleblower report filed last year by JPMorgan Chase's former head of fraud prevention, and representatives from the U.S. Attorney's Office for the Southern District of New York and the Treasury Department have met with the whistleblower and received relevant documents.