Nigerian police say they 've arrested senior Boko Haram member . They say Mohammed Zakari calls himself `` chief butcher '' of the Balmo Forest . That 's a region of northeast Nigeria where troops claim to have routed Boko Haram . The group has been blamed for at least 200 deaths in recent weeks, including women and children who were hacked or burned alive by militants.
Nigerian police say they 've arrested senior Boko Haram member . They say Mohammed Zakari calls himself `` chief butcher '' of the Balmo Forest . That 's a region of northeast Nigeria where troops claim to have routed Boko Haram . The terror group has been blamed for deadly attacks in recent years .