A military court Gaza convicted four Islamist extremists on Monday of kidnapping and murdering Italian peace activist Vittorio Arrigoni.
Mahmud Al-Salfiti and Tamer Al-Husasna were jailed for life. Another defendant, Khadr Faruk Jerim, was handed ten years.
The three were members of the security services in the Hamas-ruled enclave and the court ordered that they be dismissed from their jobs.
Judges also handed a fourth hardliner, Amer Abu Ghola, a one-year prison sentence for providing the house where Arrigoni was hanged.
He was snatched on April 14th last year by a previously unknown Salafist jihadist group, Tawhid wal Jihad.
Shortly after his kidnapping, Arrigoni’s captors posted a video online threatening to kill him within 30 hours unless Hamas released a number of jihadist prisoners.
Arrigoni was found dead ahead of that deadline.
The 36-year-old was a member of the pro-Palestinian group, International Solidarity Movement.
He had lived and worked in Gaza for three years prior to his death.