LINCOLN, Neb. (AP) — A new report says no animal mistreatment was found during a recent inspection of a federal livestock facility in Nebraska, but regulators have halted new research at the facility.

U.S. Agriculture Secretary Tom Vilsack shut down research at the Meat Animal Research Center near Clay Center until improved animal welfare oversight procedures are enacted.

An animal welfare panel for the U.S. Department of Agriculture released the report Monday, saying no mistreatment was found during a three-day visit last month at the facility. The 50-year-old center conducts scientific studies to help the livestock industry increase the quantity and quality of meat production.

The panel plans to issue a second report later based on its review of three to five other federal research facilities.