They were allegedly arrested on the orders of the State military caretaker Governor Maj-Gen Matur Chut Dhuol but he denies.
A Criminal Investigation Department (CID) officer however said the arrest of the youth was under the instruction of the of the state governor
One of the detainees spoke to press on Friday, saying they were not given any bedding.
The reason for their detention remains unclear as they were later released without any charges. The governor accuses those against him of being supporters of former Vice President Riek Machar.