S.C. Code Ann. § 63-19-850: Transportation to detention facility.

No child may be transported to a juvenile detention facility in a police vehicle which also contains adults under arrest. When a child is to be transported to or from a juvenile detention facility following a detention screening review conducted by the Department of Juvenile Justice or after a detention order has been issued by the court, the local law enforcement agency which originally took the child into custody shall transport this child to or from the juvenile detention facility. Transportation of juveniles between department facilities, if necessary, is the responsibility of the department.