PROVIDENCE, R.I. (AP) — A 21-year-old man has been arrested by the Rhode Island State Police and charged with the alleged sex trafficking of a teenage girl from Massachusetts.

State Police say Adolfo Hernandez, of Boston’s Mattapan neighborhood, was charged with sex trafficking of a minor and possession with intent to deliver crack cocaine.

Police said Monday that photos of a 17-year-old runaway from Massachusetts appeared in a sex ad online. They found her at a motel in Warwick.

Police say Hernandez was involved in trafficking the teenager, and they seized crack cocaine from him.

It is unclear whether Hernandez is represented by a lawyer.

He was arraigned at State Police Headquarters and ordered held without bail.

The teenager was returned to personnel from the Massachusetts Department of Children and Families.