The fate of pilot Lieutenant Mu'ath al-Kaseasbeh and fellow hostage Japanese journalist Kenji Goto was unknown late Thursday after a deadline set by the Islamic State group in a proposed prisoner exchange expired at sunset Thursday.
Islamic State Threatens Two Foreign Hostages

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A passerby is silhouetted against a large TV broadcasting a news program showing a still photo of Japanese hostage Kenji Goto holding what appears to be a photo of Jordanian pilot Mu'ath al-Kaseasbeh, in Tokyo, Jan. 28, 2015.

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Junko Ishido, mother of Japanese hostage Kenji Goto held by Islamic State group, speaks during a press conference in Tokyo, Wednesday, Jan. 28, 2015.

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People from the al-Kaseasbeh tribe and other tribes take part in a demonstration outside of Jordan's cabinet in Amman calling for the release of Jordanian pilot Lt. Mu'ath al-Kaseasbeh, who is held by Islamic State group militants, Jan. 27, 2015.

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A woman holds a picture of her son, Jordanian pilot Lt. Mu'ath al-Kaseasbeh, who is held by Islamic State group militants, in Amman, Jordan, Jan. 27, 2015.