A tractor-trailer overturned on Interstate 85 in south-central North Carolina, killing the driver and throwing cattle out of the rig.

The Charlotte Observer reported on its Web site that the tractor-trailer from Martin's Abbatoir Wholesale Meat Co. wrecked around 4 a.m. Tuesday near Concord.

Some of the approximately three dozen cows on the truck were killed. Others had to be euthanized, and some were rounded up.

Authorities called in men on horseback to round up the remaining three to seven cows that were still loose somewhere between U.S. 29 and I-85.

Highway Patrol troopers say the driver lost control of the tractor-trailer on northbound I-85 and went off the road, crashed onto a access ramp and overturned.

Martin's Abbatoir is located in Godwin, about 15 miles northeast of Fayetteville.