The family of freed American hostage Keith Siegel said he was deprived of both food and sunlight during his 15-months hell. Now, the 65-year-old North Carolina native is eager to help the hostages still under Hamas captivity in any way he can.

Hanna Siegel, the niece of released American hostage Keith Siegel, told ABC News Live on Monday that her uncle is doing "remarkably well" after being released by Hamas on Saturday. She said her uncle is "a little weak and a little thin," but "he's doing OK."

Yarden Bibas, an Israeli father who was kidnapped by Hamas along with his wife and two young children, has faced an “unbearable reality” after being released by the terror group without his family.