Firefighters were battling a four-alarm commercial building fire in Pasadena Wednesday evening.

The fire was reported around 5:50 p.m. Wednesday in the 600 block of Sierra Madre Villa Avenue, near Orange Grove and Rosemead boulevards, prompting the response of fire and HazMat crews to the location, according to the Pasadena Fire Department.

At least 60 firefighters were at the scene the fire at the General Motors design studio, NBC4 reported.

The public was advised to avoid the area while crews were battling the flames.

It remains unclear what may have sparked the flames.

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