(CNN) — Thirty-one people working in a massive underground tunnel in Los Angeles were rescued Wednesday night after a portion of the structure collapsed, officials said.
Those rescued didn’t have any visible injuries, the LAFD said in a statement , shortly after an operation that saw several of those trapped in the industrial tunnel hoisted up to safety by crane.
More than 100 Los Angeles Fire Department responders raced to the scene in the city’s Wilmington neighborhood to assist in the operation, including Urban Search and Rescue teams, Los Angeles Mayor Karen Bass said on X.
The collapse occurred approximately five to six miles from the sole entry and exit point of the tunnel and about 400 feet below ground, officials said. The tunnel is part of a municipal wastewater project.