Top EPA managers were aware as early as 2011 about serious problems with a high-ranking official who would later be sentenced to prison for defrauding the agency, but did not crack down for more than two years, newly released documents show. 

The documents were released by Sen. David Vitter, R-La., who has accused EPA Administrator Gina McCarthy of looking the other way when fraudster John Beale was collecting improper payments. At the time, McCarthy was Beale's boss at the Office of Air and Radiation.