Israel has reopened two crossings in Gaza, while the key Rafah crossing will stay closed to the movement of people until further notice.

An Israeli security official said the transfer of aid into the territory is halted "until further notice," the first major test of the ceasefire.

Two of U.S. President Donald Trump’s envoys traveled to Israel to shore up the tenuous ceasefire that’s holding in Gaza, a day after the fragile deal faced its first major flareup.

Israeli Prime Minister Benjamin Netanyahu said in a statement that Hamas had violated the ceasefire and vowed to go "forcefully" after Hamas terrorists. On Sunday, he decided to close all crossings to the Gaza Strip and halt the delivery of humanitarian aid in response to Hamas' violation of the ceasefire.

Hamas and Israel accuse each other of violating the peace deal, while hospital sources in Gaza say 44 people have been killed.

Israeli Prime Minister Benjamin Netanyahu directed the military to take “strong action” against any ceasefire violations but didn’t threaten to return to war.

The hard-won ceasefire between Israel and Hamas appeared threatened on Sunday as Israel accused the Palestinian Islamist group of attacking its troops in the Gaza Strip, before launching fresh strikes in response.

Trump administration envoys Jared Kushner and Steve Witkoff touched down in Israel on Monday, seeking to keep the fragile ceasefire together. Vice President JD Vance is expected to follow on Tuesday.

Israel and Hamas took steps toward ending the two-year war that has devastated the Gaza Strip, but hard work lies ahead.