Police say rap music mogul Marion "Suge" Knight is in a Las Vegas jail on drug and assault charges after he was accused of beating his girlfriend while brandishing a knife.

The 43-year-old Knight was arrested today (Aug. 27) on charges of assault with a deadly weapon, possession of a controlled substance, possession of dangerous drugs without a prescription and battery domestic violence.

Police responding to a report of a car hitting a curb near the Las Vegas Strip say they found Knight standing over his longtime girlfriend with a knife in his hand. Police say the woman tried to run from the car, but Knight grabbed her.

He's accused of having the drugs Ecstasy and hydrocodone when he was arrested. Knight's lawyers, David Chesnoff and Richard Schonfeld, declined to comment.

Knight is the co-founder of Death Row Records. He's had numerous prior run-ins with the law, including several arrests for assault.