Fire crews Thursday afternoon extinguished a blaze in downtown Los Angeles before it damaged some boxes at a business under the Santa Monica (10) Freeway.

Firefighters were sent to the 600 block of East 16th Street, near San Pedro Street, about 4:15 p.m., according to Brian Humphrey of the Los Angeles Fire Department.

The exterior fire was extending into a commercial building, activating the building’s sprinkler system, but fire crews quickly extinguished the blaze before it burned more than a couple of boxes at the unidentified business, he said.

No injuries were reported, and the cause of the fire was under investigation, he said.