An ad on a free classifieds website led Fort Wayne police to arrest a man accused of running a prostitution operation.

An officer’s check of Backpage.com for ads associated with prostitution prompted an investigation, during which police stopped Antwone K. Davis Sr. on April 2 as he was driving a black Chevrolet Impala, court documents said.

A woman in the car told police she and Davis had been dating for six months and that he had come to her two months ago about “making money” through online prostitution. The woman told police Davis posted the ads, but she also told them she posted the ads, court documents said.

Davis told police his girlfriend would give him the money she received from clients, and they would share it, but later he told police she would keep the money and buy what they needed, court records said.

The woman was charged with prostitution, a misdemeanor. Davis, 36, of Hammond, is charged with promoting prostitution, a felony. He was being held Tuesday at the Allen County Jail in lieu of $10,750.