Pop star Man Wenjun has been locked in a police cell after he was allegedly busted with heroin during a raid on his wife's birthday party.

In news that has shocked the entertainment industry, the 40-year-old singer, his wife Li Li and more than ten other people were detained by police early on Tuesday.

Police acting on an anonymous tip-off raided the VIP room at the popular Coco Banana club in Beijing as Man celebrated his wife's birthday with their friends.