UPDATE: The man killed in a Christmas Eve fire in Laurel Heights has been identified by the medical examiner as 83-year-old Michael Hooker. Hooker was a San Francisco resident.
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One person died and two people were injured, including a San Francisco firefighter, in an early morning blaze in the Laurel Heights neighborhood, fire officials said.

Crews responded to the two-alarm fire shortly before 1 a.m., at a three-story home in the 3800 block of Clay Street.

An elderly man died in the blaze and an elderly woman was rescued and taken to a hospital and as of Monday afternoon remains in critical condition, San Francisco Fire Department Lt. Jonathan Baxter said. The names of the victims have not been released.

A firefighter, injured while trying to enter the burning home, suffered burns and was treated and released from a hospital, Baxter said.

The fire started on the home’s second floor, and spread to the third floor. The fire’s cause is under investigation.