10:29 PM PT -- DaBaby has been arrested for battery in connection to the robbery investigation. His bond has been set at $1,500.

8:00 PM PT -- Sources with direct knowledge tell TMZ, the victim in the alleged robbery is a concert promoter.  We're told he was meeting up with DaBaby and his crew to pay for a gig, and the rapper believed the promoter shorted him by several thousand dollars. As one source put it, "Things just went out of control."

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