At least 3 killed in 50-car pileup on PA highway

A Pennsylvania county coroner said at least three people died in a collision involving more than 50 vehicles that closed a portion of an interstate and sent more than a dozen people to area hospitals Monday.

Officials believe a snow squall clouded visibility and likely contributed to the accident in northeast Pennsylvania. About 50 vehicles including multiple tractor trailers were involved in the initial crash and emergency personnel from four different counties responded and took about 20 patients to area hospitals for treatment.

Footage uploaded to social media Monday showed an out-of-control tractor-trailer smashing into a large dump truck.

Another large truck spewed black smoke and orange flames into the air and an SUV struck a passenger car sending the sedan spinning, narrowly missing its driver who stood on the shoulder of the highway shrouded in snow and fog. The National Weather Service had warned of "numerous brief heavy snow squalls with very poor visibility."