The Palestinian extremists claiming to hold kidnapped BBC journalist Alan Johnston on Tuesday threatened to kill their hostage ‘like a lamb’ unless Britain and Jordan release Muslim prisoners. In a statement emailed to AFP, the Army of Islam demanded the release of Iraqi woman, Sajida Al Rishawi, who has been sentenced to death in Jordan over triple hotel attacks in Amman that killed 60 people. It also demanded the release of Islamist Abu Mohammed Al Maqdissi -- held in Jordan since July 2005 -- and the Palestinian-born radical cleric Abu Qatada once fingered as the Al Qaeda spiritual guide in Europe and held in Britain. ‘Our demands are known to all, release the three hostages, Sajida, the Palestinian Abu Qatada and Abu Mohammed Al Maqdissi. There will be no compromise, he (Johnston) will either stay in captivity for 1,000 or be slaughtered like a lamb,’ the group said. The chilling threat came just two days after the British journalist appeared in a grim new video, saying he was wearing a bomb-belt that his Gaza captors will detonate if there is any attempt to rescue him. Johnston, an award winning journalist who was the only Western reporter still based permanently in the Gaza Strip when he was snatched at gunpoint on March 12 has been held in captivity for 105 days.