A semi hauling about 155 hogs to St. Joseph, MO., overturned late Thursday night in Montgomery County, killing at least 60 and injuring the driver. The Sheriff’s Office reports the accident happened at around 10:15-p.m. on Highway 71, about a mile north of Morton Mills.

Authorities say the 2013 Peterbilt driven by 42-year old Ronald William Moore, of Denison, and owned by Sioux Valley Transport, was traveling south on Highway 71 when the tractor-trailer crossed the center line of the road and entered the east ditch before rolling onto its side. Moore suffered minor injuries during the accident, and was transported to the Montgomery County Memorial Hospital by Villisca Rescue.

The hogs were unloaded from the tipped over trailer into another trailer, also owned by Sioux Valley Transport. Damage to the semi’s tractor & trailer was estimated at $100,000 altogether. The hog loss was estimated at $18,000.

The accident remains under investigation. The Montgomery County Sheriff’s Office was assisted at the scene by personnel with the Gran Fire Dept., Villisca Fire Dept., Iowa State Patrol, Montgomery County Emergency Management, and area farmers, who lent their equipment to assist in the loading and unloading of hogs.