LL Cool J has beaten up a suspected burglar who he caught inside his LA mansion, according to reports.
The rapper-turned-actor, whose songs include Mama Said Knock You Out, broke the man's nose and jaw in what Los Angeles' police called a "knock-down, drag-out" fight, the LA Times said.
He is said to have detained the battered and bruised suspect, Jonathan Kirby, 56, who has a record of previous thefts, by the time police arrived in the early hours of Wednesday.
The 44-year-old star, who plays a special agent in US show NCIS Los Angeles, told officers he had gone to investigate a noise in the kitchen when the man came at him and they began fighting.
LL Cool J, who was not injured, told police he was concerned for the safety of his family, the LA Times said.
His spokesman was quoted as saying: "LL Cool J, and his family, are safe and thank everyone for their thoughts and concern.
"As a father, husband and citizen, he is committed to keeping his family safe and is co-operating with authorities on this private matter."
LL Cool J - an abbreviation for Ladies Love Cool James - was born James Todd Smith and released the first of many albums, Radio, in 1985 before going on to star in films including Halloween H20 and Deep Blue Sea and the TV series 30 Rock.