Violence comes amid ongoing religious tension rippling across the country
Attacker expressed support for Islamic State
Prosecutors begin questioning military leaders involved in the attempted coup
Amnesty International reports abuse of Boko Haram suspects
Authorities are treating the incident as terrorism
Surreptitious attempts to buy weapons technology raise questions about the deal’s effectiveness
Two Americans and citizens of several European countries among the dead
Amnesty International accuses Western ally of human rights violations amid increasing pressure on dissidents
Parliament gives the outgoing British prime minister a warm send-off
Vice president leaves the capital after five days of clashes
