A four-alarm fire in San Francisco's Inner Richmond neighborhood early Friday morning has damaged several homes and displaced more than 30 people, firefighters said.

Shortly after 1:50 a.m., firefighters were called to the 500 block of 5th Avenue, between Balboa and Anza streets. The fire, which grew to four-alarms, involved five 3-story multi residential dwellings.

More than 130 firefighters responded to the fire, which was put under control around 4:30 a.m.

Firefighters said at least 35 people were displaced as a result of the fire. The American Red Cross responded to the scene to assist the affected residents.

In an update Friday afternoon, the fire department said that one cat had died in the fire. A firefighter suffered injuries and is expected to recover. 

"It's incomprehensible," said Madeleine Buzbee, who lives nearby. "There's many generations in all of these houses. This block is a very tight-knit community here on 5th Avenue."

The cause of the fire is under investigation.

• San Francisco Fire Department
• Fire
• House Fire
• San Francisco