Beijing police are holding six people who are allegedly involved in a sex video that was apparently made in a popular fashion retailer's fitting room, Beijing media reported on Sunday.

The six include a man and woman suspected of being in the video, which was made in April in the Uniqlo outlet in Beijing's Taikoo Li Sanlitun shopping center, Beijing police said on their micro blog on Sunday.

A man surnamed Sun, 19, one of the six, is detained for uploading the video to Sina Weibo, China's Twitter-like social network. Three others are detained for spreading the video, police said.