The fire started in the garage of a duplex, according to authorities, on the 28-hundred block of Valley Vista Way.
Four people and a dog were displaced after part of a duplex caught on fire in Oceanside Saturday evening.
The fire was reported just before 10 p.m. at a duplex in the 2800 block of Valley Vista Way, according to the Oceanside Fire department.
Arriving firefighters found the garage of one of the duplex's units in flames and the fire was quickly moving to the duplex's common attic, officials said.
Fire crews were able to stop the flames from extending to nearby homes and limit the damage made to part of the second unit.
Neighbor Steve Glover first spotted the fire and called 911. He then ran from one house to another to help people get out including one elderly woman.
"It was kind of pandemonium, just people running everywhere and just you're just at awe, the magnitude of the fire," Glover said.
Glover's son helped by ringing doorbells at nearby duplexes in harm's way.
The fire caused an estimated $300,000 in damage. No injuries were reported.
The Red Cross assisted four people and a dog displaced by the blaze and the exact cause of the fire was being investigated.