August Alsina is currently being investigated following a brawl with concert promoter Loose Cannon Slim backstage the State Of Emergency 2 concert last weekend in St. Louis.

There are several unconfirmed reports about what triggered the melee at what is supposed to be a concert promoting peace.

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According to TMZ, the fight started after Alsina got upset over being paid too late for the show.

In a video posted on YouTube, you can see Alsina and his crew in a verbal battle with the concert promoter before things got physical.

Initial reports suggest that the “Benediction” singer was upset because he had to perform before Atlanta rap group Migos even though he is a bigger artist.

Additional sources say that security personnel helped August Alsina ambush the promoter.

Watch the video below.