PICO RIVERA (CBSLA.com) — Firefighters extinguished a third-alarm blaze on Tuesday that erupted inside a commercial strip mall in Pico Rivera.

Around 4:30 a.m., crews were sent to the 4500 block of Rosemead Boulevard for report of a structure fire, according to the Los Angeles County Fire Department.

Upon their arrival, firefighters located heavy smoke and flames showing from the one-story building.

In total, 105 firefighters were able to extinguish the blaze within two hours.

No injuries were reported.

The cause of the fire remains under investigation.