Lausanne, Oct. 29 -- The International Skating union (ISU) has launched an investigation after two Chinese athletes appeared alongside an "inappropriate" plush toy missile at an event last week.

Ice dancers Ren Junfei and Xing Jianing were seen with a large toy version of China's new DF-61 missile - a huge intercontinental ballistic missile (ICBM) transported on an eight-axle truck and capable of carrying nuclear weapons - at the Cup of China in Chongqing on Saturday, reports CNN on Tuesday.

Footage from the event showed Xing and a team official holding the toy while waiting to see what scores the pair would be awarded. Ren briefly held up the toy in addition to holding a large stuffed animal.

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