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Three people died and more than 20 others were injured Thursday in a massive pileup involving tractor-trailers and passenger vehicles on Interstate 94 in northwestern Indiana.
Photos: Massive pile-up in Indiana

The Indiana State Police said one injured person remained trapped several hours after the series of crashes, which occurred about 3:30 p.m. near Michigan City, Ind., between Exits 26 and 40. Police blamed the pileup, which involved about 15 semi trucks and 15 other vehicles, on white-out conditions from a lake-effect storm blowing through the region.

All eastbound lanes were closed, and several state roads were either closed or blocked in what was called a critical disruption of traffic. Traffic was being rerouted slowly on the westbound lanes.

White-out conditions also caused several other crashes on I-94, which troopers called impassable.

Drivers were urged to avoid the area, about 50 miles east of Chicago.

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