Welder’s sparks caused Boston fire that killed 2 firefighters

The fire that killed two firefighters as it burned through a brownstone in Boston’s Back Bay neighborhood was caused by welders working at the back of a neighboring building, the Boston Fire Department said Friday.

Welders were working on an iron railing behind 296 Beacon Street, acting Boston Fire Commissioner John Hasson said at a news conference. Sparks from the welding got under the shingles, “festered there for a while,” and then were fed by the wind blowing off the Charles River, he said. The two firefighters were trapped in the basement of 298 Beacon Street as the fire raged out of control.

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