A Pittsburgh, Pennsylvania, restaurant sparked a federal investigation after it served horsemeat as part of a special dinner menu.

Since 2006 a Congress has forbidden the USDA from using its budgetary revenue to fund for inspections at U.S. horse processing plants. A spokesperson from the USDA’s Food Inspection Service (FSIS) told The Horse that without inspection, no horsemeat is eligible for the FSIS mark of inspection and, therefore, cannot be imported into or sold in the United States.

On May 8 Cure restaurant hosted a pair of Canadian chefs who served horse tartare on a special menu. On May 10, FSIS received notice of the incident and was onsite investigating the firm “within hours,” the spokesperson sad.

The spokesperson said the investigation revealed that the restaurant’s chef/co-owner illegally brought less than four pounds of horsemeat into the United States following a personal trip to Canada. Following its investigation, FSIS issued a notice of warning for the illegal entry of horsemeat into the United States, the spokesperson said