The warning came just hours after two gunmen opened fire at a Jerusalem bus stop, killing six people. Hamas has claimed responsibility.

Hamas issued its strongest messaging about the Israeli hostages in Gaza Thursday night, saying that Israeli Prime Minister Benjamin Netanyahu’s Gaza City ground incursion means that Israel has lost any chance of getting its hostages out of the territory – dead or alive.

Israel’s defense minister has ordered all remaining Palestinians to leave Gaza City, saying it is their “last opportunity.”

U.S. Secretary of State Marco Rubio arrived on Sunday morning in Israel, where he plans to meet with officials to discuss the war in Gaza."My focus will be on securing the return of hostages, finding ways to make sure humanitarian aid reaches civilians,

Hamas loses contact with two Israeli hostages amid escalating conflict. Discover the latest updates on the situation.

Israel's defense minister ordered all remaining Palestinians on Wednesday to leave Gaza City, saying it was their "last opportunity" and that anyone who stayed would be considered a militant supporter and face the "full force" of Israel's latest offensive.