Charleston, W.Va. ? A poultry processing plant fired 11 workers on Wednesday, a day after an animal rights group released a secretly shot video of workers kicking, stomping and smashing chickens against walls at the West Virginia facility.

Pilgrim’s Pride, a supplier for KFC chicken restaurants, said three of those fired at its plant in Moorefield were managers and eight were hourly workers.

“We will continue with this investigation until we’re confident that every employee — regardless of rank — who had knowledge of these incidents has been held accountable for their actions,” president and chief operating officer O. B. Goolsby said Wednesday evening.

The Pittsburg, Texas-based company said it has put quality assurance monitors on both shifts at the plant, and managers at its 24 other North American plants were told to educate workers about animal welfare policies.

The grainy videotape, which was released over the Internet, was secretly recorded between October and May by an investigator with the People for the Ethical Treatment of Animals.

KFC President Gregg Dedrick said the fast-food company will stop buying from the Moorefield plant until Pilgrim’s Pride can ensure no future abuse will occur. KFC also will place a full-time inspector in the plant to watch for further abuse.