Nippon Express Co., the nation's leading logistics service provider, said Wednesday one of its employees falsified inspection stamps on government-stockpiled rice it had stored, in another case involving quality-control misconduct by a major Japanese firm.

According to the company, an employee at its office in Hiroshima Prefecture falsified inspection stamps and then placed them on 15 new container bags after the originals, each with 30 kg of rice, became wet due to rain in June 2014. The firm said the brown rice contained in the bags did not get wet.

The bags were shipped to a livestock feed factory in May 2016 and June 2016, but there have been no reports of health damage, the firm said.