The effort to free Japanese freelance journalist Kenji Goto and Jordanian Lt Mu'ath al-Kaseasbeh gained urgency with the release of an apparent ultimatum late yesterday from the Islamic State group.
In the message, the extremists say the two hostages will be killed within 24 hours late today Japan time unless Jordan frees Sajida al-Rishawi, an Iraqi woman sentenced to death in Jordan for her involvement in a 2005 terrorist attack on a hotel that killed 60 people.
In Jordan, the pilot's father, Safi al-Kaseasbeh, beseeched the government "to meet the demands" of the Islamic State group.
"All people must know, from the head of the regime to everybody else, that the safety of Mu'ath means the stability of Jordan, and the death of Mu'ath means chaos in Jordan," he told The Associated Press.
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About 200 of the pilot's relatives protested outside the prime minister's office in the Jordanian capital of Amman, chanting anti-government slogans and urging that it meet the captors' demands.
A prisoner exchange would be contrary to the policy of Jordan's main ally, the US, which opposes negotiating with extremists. Manaseer's comments were the strongest suggestion yet that Japan and Jordan might be open to a prisoner exchange.
The hostage saga involving the two Japanese nationals has stunned Japan and triggered criticism of Abe over the handling of the crisis. The militants reportedly have beheaded one Japanese hostage, Haruna Yukawa.
Yesterday's video resembled a message released over the weekend showing a still photo of Goto holding what appeared to be a photo of Yukawa's body. It withdrew a demand for USD 200 million in ransom for Goto and Yukawa made in an earlier message.