A top official at the state Department of Conservation and Recreation has resigned after being accused of inappropriately using the siren and emergency lights of his state vehicle.

DCR Deputy Commissioner Matthew Sisk stepped down from his $112,000-a-year position Friday, a department spokesman confirmed to local news media.

The department released no details about the incident.

The accusation about the misuse of emergency lights and siren isn’t the first allegation that Sisk abused his position.

Sisk, who also serves on the Republican state committee, and DCR Commissioner Leo Roy were suspected for a week last month after news media reported that they hosted a July 3 party at a prominent GOP official’s home using department resources and staff. The two officials reimbursed the state for the expenses.

Sisk was a member of Gov. Charlie Baker’s campaign staff. The governor appointed Sisk to the DCR job.