(STMW) — A 33-year-old man was allegedly held at gunpoint and forced to have sex with a woman in the backseat of a car after the woman’s female companion offered him a ride on the Near North Side over the summer.

The man begged one of his tormentors — who demanded he place his hands on her breasts and buttocks during the July 26 attack — to stop, Assistant Cook County State’s Attorney Amanda Pillsbury said Thursday.

He eventually escaped, running out of the car naked from the waist down and into a taxi where a cabbie helped him and drove him home to the suburbs, Pillsbury said.

The man had been walking in the 400 block of North Kingsbury early that morning when 25-year-old Cierra Ross allegedly pulled up to him and offered to give him a ride, the Chicago Sun-Times is reporting.

While she was driving, Ross pulled out a black revolver and ordered the man, who was in the passenger seat, to get in the back and have sex with her friend, Pillsbury said.

The woman in the backseat demanded that he take off his clothes and the man complied by taking off his shoes, pants and underwear before he was assaulted, Pillsbury said.

The two women also took $200 from the man, his credit cards and iPhone, according to a police report.

When the victim noticed a nearby cab’s headlights, he decided to flee and seek help, Pillsbury said.

The cabbie let the man use his cell phone to email himself a picture of Ross’ license plate number, Pillsbury said.

The victim later identified Ross in a lineup, Pillsbury said.

Ross, who also uses the alias Octavia Brown, was arrested on Tuesday, the police report said.

The other woman has not been charged.

Ross, who appeared in court Thursday in Jordan gym shoes and a black and red striped shirt, has previous misdemeanor prostitution convictions.

The mother of two currently is a waitress at Denny’s, her defense attorney told Judge Israel Desierto.

Desierto described the facts of the case as “somewhat unusual” before ordering Ross, of Olympia Fields, held in lieu of $75,000 bail for aggravated criminal sexual abuse and armed robbery.

(Source: Sun-Times Media Wire © Chicago Sun-Times 2013. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed.)