Associated Press
This still image taken from a video posted on YouTube by jihadists on Tuesday, Jan. 27, 2015, purports to show a still photo of Japanese journalist Kenji Goto holding what appears to be a photo of Jordanian pilot 1st Lt. Mu'ath al-Kaseasbeh. Both are being held hostage by the Islamic State militant group. The still image was overdubbed with audio which condemns Jordan for not releasing Sajida al-Rishawi, saying that unless she is freed within 24 hours both will be killed. The Arabic subtitle reads "I only have 24 hours left to live." The Associated Press could not independently verify the video.

AMMAN, Jordan — A spokesman says Jordan's government has demanded proof of life of a Jordanian pilot held by Islamic State militants before moving ahead with any possible swap to bring about his release.

The militants have purportedly threatened to kill the pilot, Lt. Muath al-Kaseasbeh, by sunset unless Jordan frees an Iraqi woman from death row and delivers her to the Turkish border.

The woman, Sajida al-Rishawi, was involved in deadly Amman hotel bombings a decade ago.

Jordanian government spokesman Mohammed al-Momani said Thursday afternoon that al-Rishawi is still in Jordan, raising doubts that the sunset deadline, which will pass in less than an hour, can be met.

He says "we want to see a proof of life of the Jordanian pilot and then we can talk about the exchange."