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.
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.