The Los Angeles Fire Department rushed to Wilmington after a tunnel collapsed and trapped at least 15 people inside. Authorities have not been able to contact the people trapped inside. The tunnel collapse appeared to damage communication lines.

Immigrant workers are central to recovery efforts in neighborhoods burned in the January wildfires, but recent raids have led some to stay home.

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.

An industrial tunnel in Los Angeles collapsed partially. None of those rescued had major injuries, authorities said.

A check from California’s largest property insurer, which says it has paid billions of dollars in claims from the LA-area fires, has taken more than a week to clear so far.

Workers were 400 feet (121 meters) underground and as much as 6 miles (9.6 kilometers) inside from the only entrance when the cave-in Wednesday evening threatened to trap them on the far side of the tunnel’s boring machine,

Monday marks six months since the pair of devastating fires destroyed thousands of homes and left more than two dozen people dead in January.

The suit, which blames LADWP for damages caused by the devastating fire, amends a complaint filed in March and contains new allegations of city mismanagement and various attempts by LADWP to cover up its part in stoking the fire that destroyed nearly 7,000 homes and businesses and killed 12 people.