State police say an SUV carrying the four was traveling east in snowy weather when it crashed into a tractor-trailer Sunday evening in Mercer County near the Ohio border. Another tractor-trailer then crashed into the wreck.
Police say the two injured juveniles were taken to a Pittsburgh hospital with serious injuries. The drivers of the tractor-trailers were uninjured.
The eastbound lanes of the interstate were closed into the early morning. Traffic was detoured.
The crash is being investigated.
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