Rescue workers continue to search for survivors two days after a 4-storey building collapsed in Dar-es-Salaam, Tanzania.
Leaders arrested following police chief’s warning of tough measures to block protest.
Body of Ali Mohamed Kibao, who was removed from a bus by armed men, found with signs he had been beaten, Chadema says.
Former presidential candidate Tundu Lissu and at least 500 youth supporters among those detained.