A lawyer says a parent upset about the end of an experimental teaching program at a Beijing elementary school has been detained on suspicion of causing troubles.

Lawyer Zhou Ze says Beijing police also searched the home of parent Cao Baoyin, a former journalist who now works in children's literature.

Cao and other parents protested the end of the previously government-sanctioned New Education project, which emphasized intensive reading at an elementary school associated with the No. 2 Fengtai Middle School.

On Tuesday, the day Cao was taken away, the district government said several parents had disrupted order by pulling their children from classes at the elementary school.

Chinese authorities are wary of any activism that could coalesce into a movement and erode the Communist Party's monopoly on power.