US condemns ‘terrorist attack’ and attributes blame to Boko Haram despite no one yet claiming responsibility A bomb attack on a packed market in north-eastern Nigeria bearing the hallmarks of Boko Haram killed about 50 people on Tuesday, sources told the Reuters news agency. The explosion happened about 1.30pm in the town of Sabon Gari, in Borno state, which is the heartland of the Islamist militant group.