COLONIAL HEIGHTS, Va. (AP) — A Virginia police chief retired less than a month after he was placed on leave following allegations of “inappropriate behavior” while off-duty.

In an email to the city manager of Colonial Heights last week, Police Chief Jeffrey Faries wrote he would retire and his last day in office would be March 31, The Richmond Times-Dispatch reported.

Last month, Virginia State Police announced an investigation of allegations that Faries behaved inappropriately while off-duty and the city manager placed him on administrative leave. The Bureau of Criminal Investigations launched the probe into allegations of inappropriate behavior and interactions while Faries was off-duty at city officials’ request, state police said.

Faries joined the department in 1989 and was chief for 15 years. Last month City Manager Douglas Smith said Maj. Robert Ruxer was appointed acting chief.

The newspaper could not immediately reach Faries for comment.