This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated.

SAN DIEGO — Investigators were looking into the cause of a fire at a commercial building in Kearny Mesa early Thursday morning, according to San Diego Fire-Rescue officials.

The fire was first reported around 1:28 a.m. at Off Road Warehouse in the 7000 block of Balboa Avenue.

When SDFD arrived the fire had already spread through the majority of the building, officials said. Firefighters were unable to enter the building and battled it from above.

The blaze comes after Off Road Warehouse went up in flames in November causing significant damage to an upstairs office space.

A fire official said the structure and its contents were a total loss and caused an estimated $3.5 million in damages.

It was not immediately known if anyone was inside the building when it sparked.

A nearby veterinarian hospital required some animals to be evacuated while firefighters battled the blaze.

Drivers were asked to avoid Balboa Avenue near Convoy Street during the morning commute.

32.821041 -117.152716