LL Cool J plays a special agent on TV's NCIS: Los Angeles and now he's caught an actual bad guy.

Los Angeles police say the rapper grabbed and held a burglary suspect at his Studio City home Wednesday morning.

Police got a 911 call shortly before 1am (1500 AEST) from someone who said her father had spotted an intruder in their home and was holding him downstairs.

Officers arrived and took a man into custody. Police say he had minor bruises and will be arrested on suspicion of burglary. His name hasn't been released.