ShareTweet An investigation has been launched in Canada after it was revealed that one of the Abu Sayyaf militants who beheaded Canadian tourists John Ridsdel and Robert Hall, in the Philippines is still actively posting on the social media site. Screenshots captured on Facebook page of Bhen Tatuh appear to show the jihadis holding the decapitated heads of the Canadian tourists, as well as pictures with the ISIS flag and a suicide vest. ShareTweet An investigation has been launched in Canada after it was revealed that one of the Abu Sayyaf militants who beheaded Canadian tourists John Ridsdel and Robert...