A man is accused of arson after firefighters made quick work of a small brush fire that broke out at a park near Irwindale on Wednesday afternoon, officials said.

No one was injured and the fire threatened no structures, according to Los Angeles County Fire Inspector Joey Marron. He estimated 100 firefighters responded to the scene.

The fire was reported to authorities at 1:13 p.m. east of Foothill Boulevard and north of Irwindale Avenue. Marron said the fire is located at Lario Park, 3089 E. Huntington Drive.

It consumed about three-quarters of an acre of brush before firefighters declared they had established a complete line around the fire at 2:20 p.m., Inspector Gustavo Medina said.

“L.A. County fire was on top of it really fast, ” Irwindale police Sgt. Rudy Gatto said. “Fortunately, it didn’t get carried away.”

Police responding to the initial reports of fire detained a homeless man who ran from them near the fire’s origin point, Gatto said.

Alex Soto, 33, described as a transient with ties to Azusa, “made statements implicating himself in the fire,” the sergeant said.

While officials were still investigating the specific cause of the fire, Soto had a lighter in possession when taken into custody, Gatto added. He was booked on suspicion of arson, as well as on outstanding arrest warrants.

Soto was being held in lieu of $250,000 bail pending his initial court appearance, officials said.