Two Japanese tourists were detained in China following a "prank" at the Great Wall that sparked public outrage.

A Japanese couple has faced heavy criticism in their home country after being detained and deported for taking photos with exposed buttocks at China's Great Wall.

Two Japanese tourists in their 20s were detained for two weeks in China then deported for taking photos showing exposed buttocks at the Great Wall, local media reported. The incident at the World Heritage site near Beijing concerned a man who showed his bottom and a woman who took photos, NTV and other Japanese media outlets reported on Thursday.

Two Japanese tourists were detained in China after one exposed himself on the Great Wall, causing outrage in Japan and raising concerns about declining Japanese morals.