Marion "Suge" Knight, the founder of controversial rap label Death Row Records, has been sent back to jail for 10 months for assaulting a parking lot attendant outside a Hollywood club.
Knight has now twice violated his parole conditions
US authorities in Los Angeles on Thursday found Mr Knight guilty of the assault and ruled that both the assault and subsequent arrest had broken the terms of his parole.
Knight, 37, was arrested on 21 June outside the White Lotus Club, favoured by celebrities, after punching a parking attendant from behind because he had blocked his car.
Rose Kogeman, one of Mr Knight's lawyers, declined to comment after the hearing.
Knight's legal representatives had previously vowed to clear the rap boss, saying he had "never touched anybody" during the incident.
They added that he was doing his utmost to stay out of prison.
It was Knight's second arrest for parole violations. The "gangsta" rap mogul was arrested in December and spent 61 days in prison.
He was convicted of associating with a known gang member, a violation of his parole conditions.
Knight was originally charged with assault and weapons violations and put on probation in 1992.
He was then sent to jail for five years in 1996 after being video-taped beating a gang member in the lobby of a Las Vegas hotel with several associates, including rapper Tupac Shakur.
Shakur was later shot dead in Las Vegas.
Knight's Death Row Records label, which he founded after a failed career as a football player, became a huge success in the early 1990s.
It boasted rap stars such as Dr Dre, Snoop Doggy Dogg and Shakur, and brought the so-called "gangsta" rap style into the mainstream.
The label is now known as Tha Row.