FRESNO, Calif. (KFSN) -- Fresno fire crews are working to figure out what sparked a fire that burned three semi-trucks.
It was first reported just after midnight on Tuesday in the area of Nielsen and Brawley in Southwest Fresno.
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Firefighters say they arrived to find the three trucks engulfed in flames.
It took about 20 minutes to put the fire out.
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Neighbors told firefighters they heard explosions in the same area.
There's no word yet on the estimated cost of the damage.