Police in Fostoria say the woman approached an unmarked police car in a parking lot and told the man inside that she had what he needed.
It turns out the driver was the police chief in the northwest Ohio town.
Chief John McGuire says he told the woman he was going to a bank to get money and instead picked up another officer to hide in the back seat.
When they returned, the pair made the arrest Tuesday afternoon.
Catherine Tate pleaded no contest this morning to soliciting prostitution and two drug-related charges and was sentenced to a total of 15 days in jail and $250 in fines. Court records show she had two prior convictions for prostitution.