The fire on the seventh floor at 1855 15th St. was first reported by fire officials on Twitter at 1:21 p.m. and was contained by around 1:50 p.m.
One person was helped out of the building and five in all were reported injured. None of the injuries were considered life-threatening, fire officials said.
#113017WF1 2nd Alarm UPDATE 1855 15th Street 5 victims non life threatening 1 of those assisted out of building by Truck 07 Unk Displaced if any. Fire Under Investigation. AVOID AREA DUE TO APPARATUS ON 1800 block of 15th pic.twitter.com/H6JKdhEhlx— San Francisco Fire (@sffdpio) November 30, 2017
Fire officials said they do not yet know if any residents will be displaced.
The fire's cause is under investigation and residents are being asked to avoid the area.
Stay with ABC7 News for the latest.