Top EPA official stepping down amid ethics probe

The Environmental Protection Agency's (EPA) air policy chief is leaving amid ethics concerns.

The agency on Wednesday announced that Bill Wehrum, the head of EPA's Office of Air and Radiation, will leave the agency by the end of June.

The announcement comes a few months after lawmakers on the House Energy and Commerce Committee launched an investigation into whether Wehrum and his deputy improperly aided former energy industry clients after joining the EPA.