The concertgoers have allegedly blamed the rappers and venue's owner for lack of safety measures in the building, reported Ace-Showbiz.
They did not specify the damages but the lawyer has claimed one of the victims suffered a fractured spine. They demand monetary compensation in the lawsuit.
The incident occurred on August 2 when the performers were gesturing to fans to come toward the stage and they all rushed toward the railing and it collapsed.
The railing was separating a sloping lawn from a covered portion of the outdoor concert hall. The lawn is several feet above a concrete walkway.