From Reuters (link), via Peking Duck:
China, which this week warned officials they would be punished for covering up pollution, has detained after he sent text messages telling people of a new case of water pollution, media reported on Thursday.
Zhou Qinghai was detained by police for “reporting faulty alarms and making chaos” in Mudanjiang in northeastern Heilongjiang province, the scene of the country’s worst water pollution in recent years after an explosion at a chemical pant in November in neighbouring Jilin.