A second person has died following a fire at a three-story home in San Francisco’s Presidio Heights neighborhood early Monday morning, according to the city’s medical examiner’s office.

The two victims killed by the fire that started shortly before 1 a.m. at 3838 Clay St. have been identified as Michael Hooker, 83, and Connie Hooker, 69.

Michael Hooker died in the blaze and Connie Hooker was taken to a hospital in critical condition but later died.

A firefighter suffered burns while trying to enter the home and was treated at a hospital and later released, San Francisco fire Lt. Jonathan Baxter said.

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

-Dan McMenamin, Bay City News