Two freight trains collided in Scott County, Mo., early Saturday morning, leaving seven injured and collapsing an overpass.

KMOV-TV reports:

"Scott County Sheriff Rick Walter says a Union Pacific train t-boned a Burlington Northern train that had just made it through an intersection."The collision caused one of the trains to derail and hit a pillar under the overpass causing it to collapse. At least a dozen train cars derailed."Walter says two vehicles were on the overpass when it collapsed. Three people in one vehicle and two people in another vehicle were taken to a nearby hospital with arm and ankle fractures."

Reuters reports the train engines caught fire after a disel fuel leak, but firefighters were able to extinguish it.

"The National Transportation Safety Board dispatched a team to investigate the collision and bridge collapse," CNN reports.

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