Crime & Safety

Chicago Explosion, Roof Collapse Caused By Worker's Torch

10 people were hurt, and two workers had to be pulled from the rubble after the blast at a water treatment plant.

CHICAGO, IL — Fire department officials say an explosion that injured 10 people at a Chicago water treatment plant was caused by a worker using a torch near a "significant amount" of methane gas.

The Office of Fire Investigation said Friday that the gas ignited and the explosion lifted the roof on the one-story brick building, causing a section of the roof to collapse.

Two of the 10 injured people had to be rescued from the rubble Thursday. Firefighters pulled one person out shortly after the explosion occurred around 11 a.m. It took about two hours to rescue the second person, who Fire Commissioner Jose Santiago said was "buried and entombed" by fallen debris.

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The 10 people were taken to area hospitals. At least two had been discharged as of Friday morning.

This aerial frame grab from video by WFLD-TV in Chicago shows rescue personnel at the scene where several people were reported trapped inside a Chicago water reclamation plant after a fire and possible explosion caused part of the building's roof to collapse Thursday, Aug. 30, 2018. (WFLD-TV via AP)

Find out what's happening in Chicagofor free with the latest updates from Patch.