A sold-out concert by Christina Aguilera and Justin Timberlake was canceled after sound and lighting equipment fell while being raised to the ceiling.
About 30 people managed to get out of the way as a large steel rigging structure used to raise the gear buckled and collapsed Saturday, authorities and members of the stage crew said.
Authorities said three people were slightly injured. Two were treated for cuts and bruises.
Neither Aguilera nor Timberlake was in Boardwalk Hall at the time of the accident. It was not immediately known what caused the collapse. Federal, state and local officials were expected to investigate.
Fans arriving at the hall’s box office were dismayed at the cancellation.
“I’m so sad,” said Michelle Ackerman, 14, of Fairfax, Va., who had come with her mother and a friend.
The singers were scheduled to next perform Monday at Albany’s Pepsi Arena.