Los Angeles duo the New Boyz were forced to cancel a concert in Flint, Michigan over the weekend after their crowd got unruly and fights broke out.
According to TheBoomBox.com, the teen duo were booked for a free concert at the Genesee Valley Center, a mall with a capacity of 300, but a reported 1,500 people showed.
The large crowd began forming at around noon for the 4 p.m. concert on Sunday (Nov. 8), causing crowding, which turned into shoving and fighting.
"It was crazy," said an eyewitness. "Some kids started fighting, while others kept getting on stage."
A mall employee said fans rushed the stage, grabbing speakers and tossing them into the crowd. During the madness, one person was stabbed with a pen, while another suffered a seizure.
Details regarding the victims' conditions were unknown at press time.
The New Boys -- consisting of Ben J and Legacy -- were also expected to sign autographs, but weren't able to. They left the stage when the crowd got out of control, and were reportedly chased by fans.
"Our mall performance in Flint was so big it was on the news just now," Ben J tweeted shortly after.
The New Boyz are most known for their breakout hit, "You're a Jerk," off their debut album, Skinny Jeanz & A Mic, out now.