WEST PALM BEACH, Fla. AP – Democratic U.S. Rep. Tim Mahoney, married with a child, declined to say Monday whether he had carried on an affair with a former aide and paid to keep her quiet, then called for an investigation by the House ethics committee into his own conduct.

Mahoney issued his statement hours after ABC News reported on its Web site that he had agreed to pay $121,000 in March to a former mistress and staff member after being threatened with a sexual harassment lawsuit. Mahoney said he would be vindicated.