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ENFIELD, N.C. (AP) _ A truck slammed into a slow-moving line of cars in a construction zone Monday, injuring nine people and killing two, authorities said.

Sheriff's Lt. Joe Williams said seven other vehicles were involved in the wreck, with the worst injuries occurring in two vehicles at the end of the line of traffic.

Investigators said the truck was going 70 mph when it plowed into a line of vehicles that had slowed to 5 mph to 10 mph. One car became wedged under the truck; the roof of another vehicle was ripped off, Williams said.

The accident happened about noon near Enfield, about 30 miles south of the Virginia line. I-95 was closed, backing up traffic for miles.