Raleigh, NC : Thousands of piglets on the loose after truck crash on Interstate 40 south of Raleigh on Tuesday, December 22, 2015

Police said the tractor-trailer carrying more than 2,000 piglets overturned on Interstate 40 south of Raleigh, causing damage that triggered traffic problems for hours.

They said a number of pigs died, but an exact figure was not available.

The police report said the truck was headed west when a car changed lanes in front of it, leading to a collision.

The tractor-trailer went off the road, across an access ramp and hit a guardrail, causing it to overturn.

The truck was removed from the scene, but officials said some closures would stay in effect as road repairs continued.

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Thousands of piglets on the loose after truck crash in US