Wal-Mart, the world's largest retailer by sales, has recalled donkey meat sold at some of its outlets in Jinan, Shandong province, after DNA tests showed the product contained meat from other animals.

The person in charge of the supplier factory, Shandong Dezhou Fujude Food Ltd Co, has been detained, and the company has suspended its production.

Wal-Mart will reimburse customers who bought the tainted "Five Spice" donkey meat, according to a statement from Wal-Mart.