COLUMBIA, Md. (WJZ) — A Howard County man was charged after he allegedly trafficked a woman from Maryland to California and back. Demontre Haynes, 34, of Fort Meade, is facing multiple counts of human trafficking and assault.

A witness called Howard County Police to report a woman being assaulted in Columbia. Officers responded to the 8800 block of Tamar Drive on Thursday and found a woman with facial injuries and Haynes standing nearby.

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Investigators believe the woman went to a friend’s house for help and when she refused to leave with Haynes he allegedly assaulted her.

Haynes was arrested on scene.

The victim, a 27-year-old Maryland woman, traveled across the country with Haynes — renting hotel rooms along the way. Haynes posted online prostitution ads with photos of the woman and arranged appointments. He also collected the payments.

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Haynes is being held without bond at the Howard County Detention Center.

The woman was referred to Hopeworks, a sexual assault and domestic violence center.

Howard County Police continue to combat prostitution and human trafficking. Detectives regularly monitor online ads.

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Investigators are asking anyone who may have information about suspected human trafficking or prostitution to contact police at 410-313-STOP or