( CNN ) -- Police and health officials have raided a slaughterhouse and meat company in the United Kingdom as part of an ongoing investigation into horse meat that was labeled as beef , authorities said Tuesday . The West Yorkshire slaughterhouse is believed to have supplied horse carcasses to a firm called Farmbox Meats Ltd. , which then sold the meat as beef for kebabs and burgers . Authorities have suspended operations at both facilities and seized all remaining meat and company files , which include a client list . Neither company was immediately available for comment . `` I ordered an audit of all horse-producing abattoirs in the UK after this issue first arose last month and I was shocked to uncover what appears to be a blatant misleading of consumers , '' said Andrew Rhodes , Food Standards Agency director of operations . Environment Secretary Owen Paterson called the revelations `` absolutely shocking . '' `` It 's totally unacceptable if any business in the UK is defrauding the public by passing off horse meat as beef , '' he said . `` I expect the full force of the law to be brought down on anyone involved in this kind of activity . '' Horse meat was discovered in products that are supposed to be 100 % beef sold in Sweden , the United Kingdom and France . While authorities said there is no immediate cause for health concerns , the discovery was a new shock to an industry already reeling from a bombshell last month , when Irish investigators found horse and pig DNA in numerous hamburger products . Investigations are under way in France , Sweden and Britain . The supply chain being studied includes more countries . Earlier this month , Britain 's National Beef Association called for more specific labeling of meat products and asked that the words `` United Kingdom origin '' be printed on packaging . CNN 's Erin Mclaughlin in London contributed to this report .
NEW : National Beef Company calls for more specific labeling of its products . A firm called Harvest , Ltd. also is arrested amid the protests . Production suspended at both facilities ; all remaining meat and firms ' files seized .