To arrest a juvenile the police must have probable cause to believe the juvenile broke the law. Sometimes the police must have a Court order to arrest.
Detention is a jail for juveniles.
After arresting a juvenile the police take the juvenile to detention. Staff decide if the juvenile should stay there. If a juvenile stays in detention, a judge must review the reason for arresting the juvenile based on certain criteria, and there must be a Court hearing where the judge decides if the juvenile should stay in detention, sets release conditions, sets the next Court hearing date and sets the amount of bail, if not released. Only parents or legal guardians are allowed to visit juveniles. Exceptions need to be approved by the Detention Manager or by the individuals' Probation Officer.