Police said the 26-year-old Carmel man told them he was driving around the East Washington Street area of Indianapolis around 10:30 p.m. Tuesday "looking at properties" when he encountered a woman wearing a white tank top and blue jeans, The Indianapolis Star reported Wednesday.
"She told him that she was a 'working girl' and asked him if he wanted to have a good time," the police report states.
The man answered affirmatively and the woman instructed him to follow her into an apartment, police said.
Police said the man told them two men in hoodies were waiting inside the otherwise empty apartment and one of them displayed a handgun and instructed the man to lie on the floor.
After robbing the man, the thieves fled and he went to a neighboring apartment to call police.
Investigators said the man's pants were found in an alley behind the building, but there was no sign of his other belongings.