Chinese police have arrested DouYu International Holdings Ltd.’s founder Chen Shaojie on unspecified charges, the latest in a series of unexplained executive detentions that have chilled the country’s giant private sector.

Police from the southwestern city of Chengdu detained the game-streaming tycoon on or around Nov. 16, Douyu disclosed in a statement Tuesday, revealing his plight weeks after reports surfaced the chairman had gone missing. Regulators had begun a probe into pornography and gambling on Douyu’s platform earlier, the Financial Times reported this month. The company’s shares dived more than 7% in pre-market trading in New York.