SAN FRANCISCO—One person was injured in a residential fire on the 400 block of Monterey Boulevard in Sunnyside, San Francisco. The fire took place on Monday, June 7 at approximately 4:15 p.m. and investigators from the San Francisco Fire Department are still determining the cause of the one-alarm fire.

The SFFD arrived on scene to a two-story duplex after receiving an incident report at approximately 4:12 p.m. Firefighters began extinguishing the flames and rescue crews searched the building, noted SFFD Lieutenant Jonathan Baxter in a statement on the Citizen App.

Wind gusts of about 30 mph caused problems for the SFFD in their efforts to extinguish the fire. One victim was found and rescued on the second floor of the single-family residency in critical condition. The victim was transported to a local trauma center. Red cross and other city services also stood by to assist those in need, according to Lieutenant Baxter.

SFFD investigators classified the fire as under investigation and no details about the total number of individuals displaced has been released to the public.