Human error is to blame in last week's gas-fueled explosion that ripped through a strip club in the western Massachusetts city of Springfield, officials said Sunday.
The blast injured at least 21 people, including firefighters.
A utility worker, responding to a report of a gas odor inside a building, inadvertently punctured a hole in a high-pressure gas line at the foundation of that building, according to a statement from the Office of the State Fire Marshal.
Markings on the sidewalk incorrectly indicated where the line was.
Once the pipe was punctured, the worker called the gas company and the fire department to shut off the gas, and the area around the building was evacuated. Investigators believe gas from the leak entered the building and later ignited.
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