Workers at an Iowa hog farm were accused of abusing animals, but an investigation resulted in no violations, according to Pam Arndt, executive director of the Humane Society in that county.

The investigation included a five-hour inspection at Grandview Farms, owned by Tom and Joni Dittmer near Eldridge, Iowa. The operation produces 160,000 hogs a year and employs more than 30 people.

According to a report from the Quad City Times, People for the Ethical Treatment of Animals (PETA) filed a complaint with the Scott County Sheriff and County Attorney claiming workers repeatedly abused animals. Although the original complaint by PETA did not state the name of the person making the allegations, the group confirmed later that it is David Clark Johnson Jr. of Pleasant Valley, a former Grandview employee who worked there for 15 months before being fired for misconduct in July.

The farm's veterinarian, Dr. Mark Brinkman, and the Dittmers have called the animal rights group's claims groundless. An animal control officer and veterinarian contracted by the Humane Society visited Grandview Farms last week. They looked at policy and procedure manuals, including euthanasia procedures, went through the hog barns, saw how animals were moved around and examined some of the farm's sows. After the investigation, they concluded no violations had occurred.