SALT LAKE CITY — Two Utah men and a woman, including one previously convicted of murder, face criminal charges for allegedly forcing two teenage girls into prostitution.

Andre Gomez, 40, David Anthony Mackey, 42, and Chandra Jones, 35, face multiple felony counts for human trafficking of a child, aggravated exploitation of prostitution and sexual exploitation of a minor. Mackey also faces a charge of unlawful sexual contact with a 16- or 17-year-old for allegedly having sex with one of the girls.

One of the 17-year-old girls told a Juvenile Justice Services therapist last September that she and her friend were the victims of human trafficking for purposes of sexual exploitation. The therapist contacted agents with the Utah Attorney General’s SECURE Strike Force.

The girl told investigators that after she walked away from juvenile services custody last June, she met a man named Anthony who asked her if wanted to make some money. He told her to reach out his friend Andre on Facebook. The girl and her friend contacted Andre and he instructed them to send him nude and partially nude photos of themselves for posting on adult websites as online ads for sex, according to charging documents.

Both girls went to a hotel in Ogden where they met Mackey and his girlfriend, Jones. Jones explained what they were expected to do and how to act, including how to post ads, how to accept money from clients, how to talk to clients and how to dispose of condoms, investigators say.

The girls had sex with clients at the hotel, and Mackey kept the money that they were paid, according to court documents. Mackey and Jones then took the girls to a Salt Lake hotel to meet other clients for sex, but weren’t able to because the couple got into a fight after they got there.

Investigators say Mackey and Jones were both aware of the girls’ ages.

Mackey and Gomez are both convicted felons who have spent time in prison for violent crimes, and Gomez was previously convicted of murder, according to the attorney general’s office.

Both girls were referred to the Refugee Immigrant Center-Asian Association of Utah, which provides comprehensive services to aid human trafficking victims. The attorney general’s office said its victim coordinator is also in regular contact the girls to ensure their rights are represented as the case moves forward.