Rappin' 4-Tay -- best known for his '94 hit "Playaz Club" -- was arrested for first degree residential burglary ... TMZ has learned.
Sources close to the case tell us the rapper is sitting in a San Francisco jail, with his bail set at $112,000. Here's the thing -- his arrest went down Sept. 24th. He's been rotting behind bars since then. Details on the alleged burglary are still unclear, but we're told it's just the latest incident in a string of legal trouble.
He also allegedly took stuff out of a commercial building recently ... and we're told cops discovered 2 outstanding warrants when 4-Tay was taken into custody.