Inspection reports found mold, insect infestations, dripping water, and meat and fat residue on walls, floors and equipment.

Sen. Richard Blumenthal had urged a probe into the USDA's handling of the Boar's Head plant, calling it an "abject failure."

U.S. Agriculture Department officials have launched an internal investigation into how the agency handled reports of serious problems tied to a deadly listeria outbreak at a Boar's Head deli meat plan