W. Va. Code § 49-2-1005: Legal custody; law-enforcement agencies.

The Department of Human Services may require any juvenile committed to its legal custody to remain at and to return to the residence to which the juvenile is assigned by the department or by the juvenile court. In aid of that authority, and upon request of a designated employee of the department, any police officer, sheriff, deputy sheriff, or juvenile court probation officer is authorized to take the juvenile into custody and return the juvenile to his or her place of residence or into the custody of a designated employee of the department.