TEMPE, AZ (AZFamily) — A bus exploded in flames on a Tempe off-ramp on Monday night.

It happened on the Priest Drive off-ramp from the Loop 202 Red Mountain Freeway just before 9:30 p.m.

Video from an Arizona Department of Transportation camera showed the bus right at the intersection catching fire. There were then several explosions and flames were shooting out both sides of the bus.

Valley Metro said the bus had no passengers and was returning to its East Valley maintenance facility before the driver noticed fire in the rear of the bus.

When Tempe Fire crews arrived, the bus was already engulfed in flames. Firefighters worked quickly to begin putting out the fire.

“The bus’s compressed natural gas (CNG) tanks began venting during the incident, prompting a cautious and coordinated r

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