Waka Flocka's performances are generally rowdy, but ultimately positive experiences, so it comes as a surprise the BSM rapper's show in Santa Ana, CA last night led to a seemingly random act of violence.

At around 9:30 PM Sunday, two moshing fans were reportedly attacked with a knife, leaving both victims injured, and one hospitalized. The first, a 19-year-old male, was stabbed in the shoulder, and his wounds were treated on the scene. The second suffered a more substantial stab wound to his back. He was treated at the hospital, and is now in stable condition.

It is not clear whether or not Waka was actually performing at the time of the attack.

ABC reports that there is no discernible motive for the stabbing, and no arrests have been made for the time being.

Waka will continue his tour with Steve Aoki as planned, and will perform at the Roseland Theater in Portland, OR tonight.