A Sunday fire in the Tenderloin has left an unknown number of residents displaced, and three people were treated for smoke inhalation.

A two-alarm fire broke out just after noon on Sunday inside a six-story apartment building at 424 Jones Street. According to the SF Fire Department, the fire "spread to multiple floors due to being in the lightwell."

The fire prompted an alert from the SF Department of Emergency Management to avoid the area of Jones and Ellis street due to Fire Department activity.


Three residents of the building were reportedly treated for injuries related to smoke inhalation, with one transported to the hospital, but the department did not note any other injuries.

The Red Cross was called in to assist displaced residents, and it remains unclear how much of the building sustained damage and how many residents were displaced.

The cause of the fire is under investigation.

Property records indicate the building contains 41 total units, and it was built in 1923.