A fire that was described as "stubborn" by firefighters was put out in about 24 minutes in the building that houses the newly renovated Reno's Pizzeria and Restaurant.
The pizzeria was the site where three youths died in a fiery crash which destroyed the restaurant in September.
Fire officials don't know how this latest fire erupted, but it was called in at about 11:30 a.m. and firefighters doused the flames in 24 minutes, Brian Humphrey of the Los Angeles Fire Department said.
The fire was in the walls and threatened the attic, according to later reports on the scanner.
Part of Ventura Boulevard was closed during the lunch hour on Wednesday. The case is still under investigation.