A platform collapsed during an aerial hair-hanging stunt at a circus performance Sunday, sending eight acrobats plummeting to the ground. Nine performers were seriously injured in the fall, including a dancer below, while an unknown number of others suffered less serious injuries.

 The accident was reported about 45 minutes into the Ringling Bros. and Barnum and Bailey Circus' 11 a.m. Legends show at the Dunkin' Donuts Center in Providence.

Stephen Payne, a spokesman for Feld Entertainment, the parent company of Ringling Bros., said the accident happened during an act in which eight performers hang "like a human chandelier" using their hair.

He said the metal-frame apparatus from which the performers were hanging came free from the metal truss it was connected to. The eight women fell 25 to 40 feet, landing on a dancer on the ground.

All the performers have been doing "some variation of this act for some time," Payne said, though he didn't know how long. The current incarnation of the act began in January with the launch of the show, he said.

Providence Public Safety Commissioner Steven Pare said officials and inspectors haven't yet determined what caused the accident. He said none of the injuries appears to be life-threatening.

In a cell phone photo provided by Tara Griggs, emergency workers tend to injured performers after a  …

Roman Garcia, general manager of the Legends show, asked people to pray for the performers.

"Everybody's doing fine, everybody's at the hospital, everybody's conscious, everybody's doing pretty well," he said at the Dunkin' Donuts Center less than two hours after the accident.

Rhode Island Hospital in Providence admitted 11 patients with varying injuries, including one in critical condition, spokeswoman Jill Reuter said.

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