SAN FRANCISCO (AP) — Two firefighters and one other person were injured Thursday as a large fire pushed by strong wind gusts engulfed three buildings near San Francisco's historic Alamo Square.

The blaze that ignited just before noon sent two firefighters to a hospital, one with burns to the neck and another suffering from smoke inhalation, said Fire Chief Joanne Hayes-White.

A resident of one of the two apartment buildings ravaged by the flames was being treated for smoke inhalation.

The five-alarm blaze sent a pillar of thick smoke rising over the residential neighborhood dotted with century-old Victorian homes. More than 120 firefighters were called in to battle the fire at the apartment buildings and one other structure.

While the towering flames shooting from the buildings' windows had died down after about an hour, efforts to completely extinguish the blaze continued.

Firefighters believed they had successfully evacuated everyone from the buildings, Seyler said. Other nearby residents were instructed to stay where they were.

The cause of the blaze was not yet known. The fire spread easily due to brisk winds and because the building where the fire started was made of wood and directly attached to other buildings, Hayes-White said.

The Red Cross was caring for residents displaced by the fire but did not have an immediate estimate of how many were affected.

Copyright 2011 The Associated Press.