Philippine troops hunt down extremists who beheaded Canadian-media-1

This image made from undated militant video, shows Canadians John Ridsdel, right, and Robert Hall. Canada’s Prime Minister Justin Trudeau confirmed that the decapitated head of a Caucasian male recovered Monday, April 25, 2016, in the southern Philippines belongs to Ridsdel, who was taken hostage by Abu Sayyaf militants in September 2015. (Militant Video via AP Video) NO SALES, MANDATORY CREDIT