Amman - Jordan's military chiefs said on Friday that they were still awaiting proof that a warplane pilot threatened with execution by the Islamic State was still alive.
ISIS had vowed to kill F-16 airman Maaz al-Kassasbeh by sunset on Thursday unless Amman handed over an Iraqi female jihadist in return for captured Japanese journalist Kenji Goto.
Jordan has demanded evidence that the pilot who crashed in Syria on 24 December is still alive before freeing would-be suicide bomber Sajida al-Rishawi who is on death row.