BEIJING (AP) — Chinese state media say the country will halt imports from a Canadian pork company after food safety issues were detected in one batch.

The Xinhua news agency reported Tuesday that customs authorities in the eastern city of Nanjing found traces of ractopamine, a feed additive banned in many countries, in pork products from Frigo Royal.

Xinhua said China will suspend imports from Frigo Royal and also stop accepting health certificates issued by the company's veterinary officer.

In recent months, China has suspended the permits of two other Canadian pork companies and halted all new purchases of Canadian canola seeds.

The moves have fueled speculation that Beijing is retaliating after Canada arrested a Chinese tech executive at the request of the U.S., which is embroiled in a trade dispute with China.