Sixteen people have been displaced and a young boy injured following a three-alarm fire on Fulton Street between Baker and Lyon Streets Saturday evening.

The San Francisco Fire Department alerted followers to the fire via Twitter at 8:22 p.m. Saturday. The blaze, which encompassed buildings at 1565 Fulton Street and 1571 Fulton Street, was raised to three alarms by 8:59 p.m.. It was contained at 9:27.

The only injury, according to SFFD, was an 11-year-old boy whose foot was cut during the incident.

Hoodline reports that the building at 1571 Fulton "is the 'Sunshine Castle,' a communal living space that's the unofficial headquarters of the Wigg Party."

Nick Brown, a Sunshine Castle resident, says that the fire started on the first floor of a structure at 1563-1567 Fulton Street, then spread to the neighboring building.

The fire was smoky enough that area residents were urged to "close windows and turn on fans" to avoid inhaling the fumes.

Though initial reports stated that the fire included a Baker Street address, and that 50 people had been displaced in the fire, the SFFD tweeted updates revising the location at 10:03 and reducing the number displaced to 16 as of at 10:52 p.m.

According to the SFFD, the Red Cross had been dispatched to assist the displaced residents. As of publication time, the cause of the fire remains under investigation.