Grayling Williams

Grayling Williams, the new head of the Baltimore Police Department's Internal Investigation Division, meets with reporters on Friday. Police Commissioner Frederick H. Bealefeld III is in the background. (Baltimore Sun Photo By Barbara Haddock Taylor / April 6, 2013)

The Baltimore Police Department's internal affairs chief is leaving the agency, a little more than a year after being brought on to reassure the public that a scandal-weary agency would get tougher policing itself, a spokesman confirmed.

Grayling Williams, who joined the department last January from the Department of Homeland Security's counter narcotics office, resigned Thursday to pursue another opportunity, chief spokesman Anthony Guglielmi said. Williams referred a reporter's questions to the spokesman.

Williams was hired by Police Commissioner Frederick H. Bealefeld III, at the time a rare outside hire made in hopes of increasing public trust after a series of scandals, a move that attracted the attention of the New York Times.

After being introduced to the media, however, Williams had a decidedly low-profile public role.

New Commissioner Anthony W. Batts, appointed in the fall, has since made several outside hires, including bringing on a deputy commissioner from the Los Angeles Police Department to lead a new "professional standards" bureau overseeing Williams' office.