Published November 20, 2015
San Francisco fire officials say a massive blaze that barreled through an apartment building construction site last month was accidental, not arson.
In a report released Tuesday, investigators say the five-alarm fire on March 11 in the city's Mission Bay neighborhood began when a hot or smoldering object ignited wood that was part of the building's structure.
Fire spokeswoman Mindy Talmadge said a more detailed report that could explain what caused the blaze is expected in the next couple of weeks.
Fire officials said a day after the fire that they were looking into preliminary reports that workers at the block-long site were doing torch work.
The fire threatened nearby structures and prompted evacuations as firefighters worked to prevent its spread through the neighborhood.
https://www.foxnews.com/us/officials-massive-san-francisco-fire-last-month-that-forced-evacuations-accidental-not-arson