Flav's fiancee called 911 after he got in a heated argument with her and an unidentified teenager in their home, TMZ reported.
The hip-hop artist whose real name is William Drayton Jr. was booked for felony assault with a deadly weapon and misdemeanor domestic violence after the alleged incident.
He is accused of threatening one person with a knife and battering the other. He is being held on $23,000 bail, TMZ said.
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