A Marilyn Manson performance in Kansas City, Missouri, on Thursday night ended in chaos when the crowd rioted following the show's abrupt cancellation due to safety concerns.

The band was only two songs into its outdoor set at the Freakers Ball at the Kansas City International Raceway when the barrier at the front of the stage broke from the weight of the crowd pushing against it, police said.

The show was put on hold while the venue's security team, Private

Systems Security, scurried to fix the barrier. The structure was

repaired after 30 minutes, and Manson resumed. But before he finished

another song, the barricade broke again, and at about 10 p.m. the

promoter canceled the concert.

"Even though the show was stopped twice for safety reasons, we wanted

nothing more than to continue to play," Marilyn Manson said in a

statement. "Although we were not allowed to finish the show, we

understand that safety needs to come first."

Many audience members weren't so understanding. Although most of the

12,000 fans headed for the exits, choruses of boos, lots of swearing

and numerous fights erupted. Then, according to police, between 2,000

and 3,000 people began rioting in front of the stage. When it became

clear that Private Systems couldn't control the mob, they called in the

Kansas City police, and an estimated 130 officers responded to the

scene in full riot gear.

The police formed a long line and ushered concertgoers toward the exit.

The orderly procession was interrupted when a group of fans started

throwing rocks, beer bottles and bottles filled with urine at the

officers, who responded by firing pepper spray at the unruly fans,

according to a police spokesperson. One officer was struck in the

finger and six fans suffered minor injuries and were transported by

ambulance to nearby hospitals, police said. Nine fans taken into

custody were released once they had calmed down.

One disgruntled audience member was arrested for trying to hit a traffic officer with his car. Nine police cars were damaged in the altercation. The Freakers Ball also featured Seether, S.T.U.N., Mushroomhead and Memento.