Prominent legal scholar and activist Xu Zhiyong, who has been held incommunicado for five months, has been formally arrested for “inciting subversion of state power”. Along with more than 10 human rights defenders, Xu was detained by police after joining a social gathering in Xiamen. Held in secret detention, Xu has had no access to his family and lawyers of his choice and is at imminent risk of torture and other ill-treatment.