This is some pretty brutal news. The Famous Jett Jackson is quite possibly the best show ever to air on the Disney Channel.
Sources tell us Young's body was discovered with a gun shot wound that appears to be self-inflicted.
Young currently appears in the TNT show "Rizzoli & Isles" -- and we're told when he didn't show up to work this morning, staffers called the landlord of Young's L.A. home to check up on the actor.
We're told ... when the landlord opened the door, he discovered Young's body.
Stay with TMZ for more as it develops.