(FILES) This photo taken on March 18, 20

(FILES) This photo taken on March 18, 2010 shows a foreign peace activist Vittorio Arrigoni (2nd R) as he takes part in a protest against an Israeli decision to tighten the border area in Khan Yunis, south of the blockaded strip. Vittorio Arrigoni was found dead early on April 15 morning, after a Salafist group posted a video of him online and threatened to kill him unless an unspecified number of their members were released by Gaza rulers Hamas. His kidnappers identified themselves as belonging to a previously unknown group called The Brigade of the Gallant Companion of the Prophet Mohammed bin Muslima. The pro-Palestinian International Solidarity Movement said on today they were disraught at news that an Italian member had been found murdered in the Gaza Strip. AFP PHOTO/ SAID KHATIB (Photo credit should read SAID KHATIB/AFP via Getty Images)