A Ceres woman and Modesto man were arrested and charged with auto theft after the stolen Jeep they were riding in was pulled over Friday evening near Nelson and Atlantic.

Ceres Police Officer Jessica Graham spotted the stolen Jeep at 10:46 p.m. traveling southbound on S. 7th Street at Morgan Road. Officer Graham ran a check of the license plate and learned it was stolen in Turlock.

The driver, Ashlee Cowan, 30, of Ceres, said she bought the Jeep a few days ago in Turlock for $250 after finding the vehicle on the app, "Offer Up." During a search of the vehicle, police found several shaved keys (often used in auto theft), several syringes for injecting heroin, and a bag containing black tar like substance believed to be heroin. When questioned about the shaved keys Cowan denied knowing about shaved keys. Cowan admitted being a heroin addict and said the heroin and needles belonged to her.

Passenger Sean Koehn, 24, of Modesto, admitted to being a heroin user and said that some of the syringes and shaved keys were his.

The Jeep's owners said they had sold the vehicle to a male and female from "Offer Up" but later realized they were paid with counterfeit money. They called Turlock Police and reported the incident.

Cowan was arrested and charged with felony auto theft, possession of stolen property, possession of an illegal narcotic and possession of drug paraphernalia.

Koehn was arrested for felony auto theft, possession of stolen property, possession of burglary tools, ex-felon in possession of ammunition, and possession of drug paraphernalia.

Both were booked into the Public Safety Center.