A fire broke out at a four-story residential building in the Mission District on Sunday morning, according to fire officials.
Firefighters battled the one-alarm blaze at 161 Bartlett St., between 22nd and 23rd streets, at around 10:53 a.m., the San Francisco Fire Department said on Twitter.
The fire was on the third floor and in the walls of the building.
Firefighters contained the fire by 11:18 a.m.
No one was injured or displaced.
This story has been updated to include additional information.