Timothy Wanamaker, the former director of strategic planning for Buffalo, N.Y., arrives in federal court last week where he pleaded guilty to theft. (Derek Gee/Buffalo News)

Wanamaker,  47, Alexandria’s deputy director of general services, was suspended Wednesday after he informed his manager about his plea the day before. He was immediately placed on paid administrative leave. He resigned Friday, said Tony Castrilli, Alexandria’s director of communications.

Castrilli said an internal audit is underway to make sure no money is missing or unaccounted for in Alexandria, although Wanamaker did not have a city credit card nor did he travel on city business. The results of that audit will be made public, he said..

Wanamaker awaits a March sentencing after admitting that he used a Buffalo credit card to charge personal travel expenses over four years, according to a story in the Buffalo News .

He left Buffalo in March 2008 to become city manager in Inglewood, Calif. He was hired in Alexandria in August 2010 and made $112,000 in his job overseeing the city’s fleet, mailroom, real estate and general administration.

He previously worked for the Prince George’s County Economic Development Corp. in 1999.