A Buffalo, N.Y., Tyson meat processing plant has been shut down by the U.S. Department of Agriculture (USDA) after inspectors found violations during follow-up testing.

The USDA's Food Safety and Inspection Service was conducting an inspection connected to a recent recall of deli meat produced by the facility. In August, 380,000 pounds of deli meat sold at Wal-Mart were voluntarily recalled after roast beef samples tested positive for Listeria monocytogenes.


"We're working diligently to address this matter, since food safety and quality are essential to the continued success of our deli meat business," said Gary Mickelson, a Tyson spokesman. The plant employs 560 workers, roughly 480 of whom are affected by the "temporary suspension of operations," according to Mickelson.