PAW PAW, MI -- A Michigan police officer has resigned as authorities consider charging him with a criminal offense for 'inappropriate' conduct after only two months on the Covert Township force.

The officer has not been identified, but Police Chief Jay Allen confirmed his department received a complaint on July 9 "that one of our officers could have done something inappropriate."

Allen referred the investigation to the Michigan State Police and a report has been submitted to the Van Buren County Prosecutor.

Allen would not comment on a report on WWMT citing unnamed sources that say the officer arrested a man for drunk driving and dropped his female passenger off at a nearby hotel. The officer then returned after his shift ended to sexually assault her, WWMT said.

Allen confirmed that he spoke with an out-of-town complainant and others connected to the alleged incident on July 9 and "determined this needed to be looked into further."

State police Lt. Chuck Christenen said two detectives have completed their report and submitted it to the prosecutor's office for review.

As is the normal procedure when an investigation involves a complaint about another agency or department, their report did not include a request for charges.

"In these incidents, we make no recommendation of whether to charge or not charge, we do not weigh in on the decision, and whatever the decision of the prosecutor's office, we support it either way," Christensen said.

"We conduct the investigation in the same way, but because many times we are working in the same area as other agencies and departments, it is cleaner if we let the prosecutor make the decision."

It's not clear when the Van Buren County Prosecutor's office will issue or rule out charges.

Rosemary Parker is a reporter for MLive. Contact her at rparker3@mlive.com.