The Shanghai Food and Drug Administration has found the Shanghai Husi Food factory forged dates on 4,396 batches of meat.
According to Xinhua, smoked beef patties produced in May 2013 were labelled as made in January 2014 at the factory, which is owned by Illinois-based OSI Group and supplies companies including Yum Brands, Starbucks and McDonald’s.
A local TV station reported last week that expired meat was being mixed with fresh meat at the factory.
Five have been detained by authorities as part of the investigation into the claims.
There have been no reports of consumers falling ill in relation to the scandal.