BOSTON (CBS/AP) — Authorities say one woman suffered severe burns and other people left the building through first-floor windows during four-alarm blaze at an apartment building in Boston’s North End.

The fire on Cooper Street was reported at about 11 p.m. on Tuesday, required the response of about 100 firefighters and prompted the evacuation of adjacent buildings in the close-packed neighborhood.

The injured woman was taken to Massachusetts General Hospital with burns to her face and arms, according to witnesses. She is currently in serious condition. Her name was not disclosed. There were no other reports of injuries.

The three-story brick building has six units.

There was no immediate word on the cause.

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