An evacuation has been lifted in the Diamond Bar area of Los Angeles County where a truck carrying cylinders of hydrogen caught fire.
The truck caught fire around 1:20 p.m. Sunday near State Routes 60 and 57, forcing an evacuation of a wide area.
County fire trucks poured streams of water to cool the tanks.
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The hydrogen was then slowly released and the evacuations were lifted around 3:30 a.m. Monday.