An Irish television program has uncovered widespread issues with the traceability of horses in Europe, revealing suspected illegal slaughter and fraud to introduce unfit horsemeat into the food chain. The program, which focused on fake passports and misused microchips at Shannonside Foods, a slaughterhouse in Ireland, prompted the suspension of the facility and a joint investigation by the Food Safety Authority of Ireland and the Department of Agriculture, Food and the Sea. The broader investigation, sparked by data on thousands of horses slaughtered in Spain and Italy, has revealed similar issues in several European countries, highlighting persistent problems despite efforts to address horse identity fraud following a 2013 scandal.