Two parents and two of their sons were killed in an Israeli airstrike that hit their tent in the Mawasi area near Khan Younis. A relative told an NBC News crew that the family had been celebrating news of the ceasefire agreement days earlier.

Gazans are curbing their optimism, having experienced other times throughout the war when a cease-fire was thought to be within reach, only for it to fall apart.

Under the Gaza ceasefire deal, Israel has agreed to release Palestinians held in Israeli jails in return for freeing hostages taken by the militant group Hamas in their Oct. 7, 2023 attack. There is no final agreement on which prisoners will be released in return for hostages,

Marking an end to more than 15 months of deadly conflict, Israel and Hamas reached a ceasefire deal on Wednesday.

Outgoing Democratic U.S. President Joe Biden said on Thursday that Israeli Prime Minister Benjamin Netanyahu "has to find a way to accommodate the legitimate concerns" of Palestinians for the long term sustainability of Israel.

Palestinians in the Middle East and around the world on Jan. 15 celebrated the news of a ceasefire and hostage release deal between Israel and Hamas.

More than 46,000 Palestinians were killed over the past 15 months, according to the Associated Press, citing figures from the Gaza Health Ministry. About 1,200 Israelis were killed on Oct. 7, 2023, in Hamas' attack and an additional 840 Israeli soldiers were killed. Arab American activists say the Palestinian death toll is higher than reported.

President Biden said in an MSNBC interview that he pushed Prime Minister Benjamin Netanyahu to prevent civilian deaths during the Gaza war. He also defended his steadfast support for Israel.

Israeli Prime Minister Benjamin Netanyahu said the country was treating the ceasefire as temporary and retained the right to continue fighting if necessary.

Under the first phase of the ceasefire, 33 hostages are set to be released over the next six weeks, in exchange for hundreds of Palestinians imprisoned by Israel.

Israel approved a ceasefire deal with Palestinian militant group Hamas on Saturday that involves releasing hostages in the Gaza Strip, and Israeli forces carried out new attacks in the enclave before the agreement's scheduled start on Sunday.