By CBSLA Staff

LOS ANGELES (CBSLA) – Firefighters Saturday battled an intense blaze consisting of wooden pallets in downtown Los Angeles.

Fire crews responded at 3:15 a.m. to 1220 S. Mateo St. where they encountered a 100-foot x 100-foot outside area of stored wooden pallets on fire, said Los Angeles Fire Department spokesman Brian Humphrey.

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It took 81 firefighters to extinguish the fire in 55 minutes, Humphrey said.

A fire captain suffered an ankle injury during the firefight and was taken to a local hospital in fair condition, Humphrey said.

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No other injuries were reported.

A section of Caltrans railing serving the nearby westbound Santa Monica (10) Freeway was disfigured by the fire but no other structures were damaged, authorities said.

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The cause of the fire is under investigation.