When troops from Chad and Niger recaptured the Nigerian town of Damasak from Boko Hamar terrorists, they found more than 100 bodies in a mass grave under a bridge. Many had their heads cut off, others were shot. The victims appear to have been killed more than two months ago. Since Cameroon, Chad and Niger began helping the Nigerian army just a month ago, major gains against the Islamists have been accomplished in the worst hit northeast states Yobe and Adamawa, Nigerian officials report. Major towns such as Bama and Dikwa are among some 36 localities recaptured, with just three said to be still in rebel hands.