Israel's prime minister says his country is ready to go back to war in Gaza if negotiations for a second phase of the ceasefire deal with Hamas collapses.

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.

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.

The long-awaited ceasefire and hostage release deal between the Israeli government and Hamas will take effect on Sunday, potentially signaling a new chapter in a bloody 15-month conflict that has enflamed the Middle East.

Israel's cabinet approved a deal with Palestinian militant group Hamas for a ceasefire and release of hostages in the Gaza Strip, Prime Minister Benjamin Netanyahu's office said on Saturday, a day ahead of the agreement's scheduled start.

Israel’s government approved a ceasefire and hostage release deal with Hamas, paving the way for the agreement to take effect Sunday and potentially signalling a new chapter in a bloody 15-month conflict that has enflamed the Middle East.

Qatar’s foreign ministry says the ceasefire between Israel and Hamas will go into effect at 8:30 a.m. (0630 GMT) on Sunday

Netanyahu's office said Hamas had "reneged on parts of the agreement reached with the mediators and Israel in an effort to extort last-minute concessions."

The ceasefire between Israel and Hamas is set to begin on Sunday, pausing the devastating 15-month war between Israel and the militant Hamas group in the Gaza Strip

Israeli government approves ceasefire agreement. Ceasefire to begin in Gaza Sunday morning, hostages to be released in the afternoon.

An Israeli airstrike early Saturday killed two parents and their two children, aged 2 and 7, in Gaza’s southern city of Khan Younis, Palestinian health officials said.