Arizona emergency crews rushed to the scene of a massive fire and partially collapsed bridge early Wednesday morning.

Tempe firefighters, paramedics and police all responded to the bridge over Tempe Town Lake when a train derailed around 6:15 a.m.

Thick black smoke could be seen when lumber being carried on the Union Pacific line went up in flames.

Debris was scattered as a portion of the bridge collapsed while the train was on fire.

“The south side of the bridge collapsed and rail cars fell into an empty park below,” Union Pacific said in a statement. “Three tank cars were on the ground under the bridge. Two contained cyclohexanone; one contained a rubber material. None are reported leaking, and no tank cars were involved in the fire.”

The bridge had recently been inspected, on July 9.

Tempe Police Chief Sylvia Moir stated that there are no known injuries at the time but to stay clear of the area.

Emergency crews remain at the scene. This is a developing story.

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