Hostages Canadian national Robert Hall and Norwegian national Kjartan Sekkingstad are seen in this undated picture released to local media, in Jolo

Hostages Canadian national Robert Hall and Norwegian national Kjartan Sekkingstad are seen in this undated picture released to local media, in Jolo

Hostages Canadian national Robert Hall (R) and Norwegian national Kjartan Sekkingstad (L) are seen in this undated picture released to local media, in Jolo island in southern Philippines. The Philippines confirmed on Tuesday the execution of Robert Hall, a Canadian who had been held hostage by the al Qaeda-linked Abu Sayyaf Islamist militant group on a remote southern island with three other people since September 2015. Handout/ via REUTERS ATTENTION EDITORS - THIS IMAGE WAS PROVIDED BY A THIRD PARTY. FOR EDITORIAL USE ONLY. TPX IMAGES OF THE DAY - RTX2G6B4

April 20, 2017 3:56 PM (UTC+8)