A Douglas County sheriff’s captain has resigned amid an internal investigation into allegations he sexually harassed a coworker, the agency said Thursday.

Bruce Ferguson, a 31-year veteran of the sheriff’s office, resigned March 11, about three weeks after the department received a complaint alleging he “engaged in acts of sexual harassment and misconduct in the workplace,” the sheriff’s office said in a statement.

An investigation was launched Feb. 20, one day after the complaint was filed. Ferguson was placed on paid administrative leave at the time, the department said.

The GBI is also investigating the allegations made against Ferguson, an agency spokeswoman confirmed.

The former captain often served as the department’s media liaison, speaking to the press during high-profile Douglas County cases.

“The Douglas County Sheriff’s Office takes all complaints of this nature seriously and a comprehensive investigation of these allegations is not only warranted but imperative,” Sheriff Tim Pounds said in a statement.

Deputies said the investigation is ongoing and that there is “little more that can be released at this time.”

In other news: 

Police said all three were members of the same family. Two were killed.