ISIS Terror

ISIS Hostage Crisis: Kenji Goto’s Wife Makes ‘Last Chance’ Plea

WATCH: ISIS hostage reports from Kobani in October 2014 0:32

The wife of the Japanese journalist being held hostage by ISIS made an impassioned plea for his release Thursday as an apparent deadline passed for a prisoner swap.

Rinko Goto, wife of Kenji Goto, said in a statement: “I fear that this is the last chance for my husband.”

She spoke amid concern over the fate of Goto and a Jordanian air force pilot, Mu’ath al-Kaseasbeh.

An earlier ISIS audio recording, purportedly featuring Goto, demanded the release of terrorist Sajida al-Rishawi, who is imprisoned for her role in an attempted 2005 suicide attack on a Amman hotel, in exchange for the life of Mu’ath al-Kaseasbeh.

The recording stated al-Rishawi must be delivered to the Turkish border by sunset Thursday (around 9:30 a.m. ET) or a Jordanian fighter pilot held captive by the militants would be executed. NBC News was not able to independently authenticate it the video.

“We now have only a few hours left to secure his release and the life of Lt. Mu’ath al-Kaseasbeh,” Rinko Goto said. “I beg the Jordanian and Japanese Government to understand that the fates of both men are in their hands.”

WATCH: ISIS hostage reports from Kobani in October 2014 0:32

Jordan has demanded proof of life of the pilot, Mu'ath al-Kasaesbeh, but has not received it from ISIS, the country's information minister, Bassam Mohammed Al-Momani, told the official news agency on Thursday.

Al-Momani confirmed that al-Rishawi is still in Jordan, but said any release would have to be in exchange for both the Jordanian pilot and Goto.

Japanese Prime Minister Shinzo Abe said in a speech before Parliament Thursday that the government was seeking assistance from Jordan as it tries to secure Goto's freedom, although he did not go into details.

'I Am Kenji' - Vigil For Japanese Hostage Held by ISIS 0:29

"We will continue to make all possible efforts so that Mr. Goto is released as soon as possible," he said, according to a translation by Reuters.

ISIS initially demanded a ransom of $200 million for the release of Goto and fellow Japanese captive Haruna Yukawa. But ISIS released a video on Saturday claiming it had beheaded Yukawa and demanding al-Rishawi's release instead.

Alex Smith and Alastair Jamieson reported from London.