Fire breaks out in Castro District, near historic theater

A building near Castro and 18th streets has caught on fire Saturday morning. A building near Castro and 18th streets has caught on fire Saturday morning. Photo: Manuel Sulzer, Getty Images Photo: Manuel Sulzer, Getty Images Image 1 of / 1 Caption Close Fire breaks out in Castro District, near historic theater 1 / 1 Back to Gallery

A large fire broke out across from the historic Castro Theatre early Saturday morning, injuring two people and displacing a number of residents.

The fire started at about 4:30 a.m. behind the building of 456 Castro Street which houses the popular Q Bar, with residences above the business. The flames spread to a neighboring residential building, also with a street-level commercial space.

Three businesses were reportedly affected by the fire and 13 people are displaced. One person "with serious injuries" was taken to a hospital, and a firefighter sustained minor injuries, according to the San Francisco Fire Department.

Photos and video on social media show flames and a wall of smoke rising from one of the buildings in the 400 block of Castro Street, at about 5 a.m. The Chronicle reported that fire crews "gained control" over the fire at around 6 a.m. and was fully contained by 10 a.m.

Firefighters are working to contain a major fire on a restaurant block located near Castro St & Market St. pic.twitter.com/x5qsNOv7MQ — Citizen San Francisco Bay Area (@CitizenAppSFO) November 16, 2019

Officials are asking people to avoid the area during cleanup. The cause of the fire is under investigation.

This story is breaking and will update as more information becomes available. SFGATE is reaching out to SFFD for more information.