If it's not the final disposition, then it could be a court entry indicating that there was a petition (criminal charging document) filed and the minor was ordered detained (held in custody) pending further action by the court.
Monk (TV series) Monk is an American comedy-drama detective mystery television series created by Andy Breckman and starring Tony Shalhoub as the eponymous character, Adrian Monk.
Stanley Kamel, a veteran TV actor who played Adrian Monk's long-suffering psychiatrist on the TV detective show Monk, died April 8 of a heart attack in his Hollywood Hills home. He was 65. www.hollywoodreporter.com