Urinboy Usmonov, a reporter for the BBC World Service’s Uzbek-language service, is being held in a detention centre in the northwestern city of Khujand for allegedly belonging to Hizb-ut-Tahrir, a non-violent Islamist movement that is banned throughout Central Asia, according to Paris-based press freedom group Reporters sans Frontières (RSF). Usmonov’s family began looking for him when he went...