They were held in Kisoro .
On 7 November , Sultani Makenga , the leader of M23 , surrendered with about 1,500 M23 fighters in Mgahinga National Park , Uganda .
fighters were held in Kisoro .
On 7 November , Sultani Makenga , the leader of M23 , surrendered with about 1,500 M23 fighters in Mgahinga National Park , Uganda .