Source: BBC NewsChinese police are investigating claims that a security firm colluded with officials to detain protesters in secret prisons, known as "black jails".
State media said police had arrested the chairman and general manager of the company, Anyuanding Security Services.
It is alleged they took money from local governments to abduct and imprison people who travelled to the capital, Beijing, to complain about local injustices.
To be clear I do not believe these were for "protesters" at all but only petitioners. Either way this is another positive development in China.