Authorities are investigating the cause of a massive fire that swept through a commercial building in downtown Los Angeles Wednesday morning.

The fire was reported around 5:50 a.m. at a two-story building located in the 1100 block of South Los Angeles Street.

Crews arrived to find heavy smoke showing and initially went into an offensive mode to battle the blaze, L.A. Fire Department spokesperson Nicholas Prange said in a news alert.

Downtown L.A. Fire
Aerial view of the fire at a commercial building in downtown Los Angeles. Aug. 30, 2023.

Smoke could be seen for miles across the L.A. basin.

About 120 firefighters battled the fire from the ground and from above and eventually subdued the flames by mid-morning.

The building was apparently full of textiles, which provided plenty of fuel for the fire.

No injuries were reported and firefighters successfully protected other occupants on either side of the building, authorities said.