Fire gutted a tractor-trailer and two trailers after an explosion at a truck yard in Fontana late Thursday.
The blaze broke out at AD Fleet Truck and Tractor Repair on the 8600 block of Live Oak Avenue at around 9:30 p.m, San Bernardino Fire Department said.
Black smoke coming from the yard could be seen for miles, and it took firefighters around 45 minutes to quell the blaze.
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Employee Roberto Limon was working inside when he heard a loud bang from outside.
"I heard something like an explosion… when I went out I saw a big fire round the back, " Limon said.
No one was injured in the fire, and the cause of the blaze is under investigation.