BOSTON (CBS) – A firefighter was injured while battling a 4-alarm blaze on Border Street in East Boston.

The unidentified firefighter went to the hospital with a back injury, officials said. His condition was not known Saturday night. Officials evacuated a nearby strip mall while firefighters were responding to reports of a building fire on Border Street at a vacant, three-story warehouse.

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Building fire opposite 173 Border St. in East Boston. (Courtesy @doogs1227)

When they arrived, firefighters found heavy smoke and flames billowing from the roof area.

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Firefighters had to use saws to get into the building, said Boston Fire Department Chief of Operations Jerry Fontana.

“It was pretty much buttoned up, hard to get into, rolling steel doors that had to be cut open. All of the doors were heavy steel doors so access was an issue,” Fontana said at the scene.

Fire officials reported fire in several dumpsters inside the building.

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The building is adjacent to the shopping center in Central Square by the tunnels. Streets surrounding the fire were closed.