A Hanford meat company that was forced to recall 58,240 pounds of ground beef because it may contain small pieces of plastic vowed on Friday to find the source of the problem.
The recalled meat from Central Valley Meat Co. was intended for use by the National School Lunch Program.
"Central Valley Meat is working diligently to identify and address the source of the problem," said Brian Coelho, general manager of the Hanford plant. "We will strive to not only maintain but improve the safety of our product, since food safety has always been our No. 1 priority."
The U.S. Department of Agriculture and the company have not received any reports of illness or injury from the consumption of the meat.
The beef being recalled was produced on April 1 and shipped to distribution centers in Arkansas, California, Montana and Texas.
The meat subject to recall include 40-pound cases containing 10-pound chubs of "Fine Ground Beef."
The products bear the establishment number "Est. 6063A" inside the USDA Mark of Inspection. The products were produced on April 1, and can be further identified by case code "6063A3091A" or "6063A3091B."
This is not the first time Central Valley Meat has been in the spotlight.
Last August, the company temporarily suspended its operations for about a week after the release of an undercover video showing acts of animal cruelty.
The secretly taped video triggered the USDA to withdraw its meat inspectors. At the time, USDA officials said it considered "inhumane treatment of animals at slaughter facilities to be unacceptable."
The plant employs about 450 people.