GAZA - Security officials found the body of an Italian man who had been abducted in the Gaza Strip in an abandoned house on Friday, a Hamas security official said.Two men were arrested and others were being sought.A Jihadist Salafi group in the Gaza Strip aligned with al Qaida on Thursday had threatened to execute Vittorio Arigoni by 17:00 local time (1400 GMT) unless their leader, whom Hamas arrested last month, was freed.