The World Food Program, the food assistance arm of the United Nations, announced Tuesday that it is pausing deliveries of food aid to the northern Gaza Strip "until conditions are in place that allow for safe distribution."

The decision came after a WFP convoy heading north from Gaza City was "surrounded by crowds of hungry people close to the Wadi Gaza checkpoint" on Sunday, the agency said. The same convoy faced "complete chaos and violence due to the collapse of civil order" when it tried to resume its journey north on Monday, according to the WFP.

"Several trucks were looted between Khan Yunis and Deir al-Balah and a truck driver was beaten. The remaining flour was spontaneously distributed off the trucks in Gaza City, amidst high tension and explosive anger," the WFP said in a statement Tuesday. "The decision to pause deliveries to the north of the Gaza Strip has not been taken lightly, as we know it means the situation there will deteriorate further and more people risk dying of hunger."

An analysis released Monday by the Global Nutrition Cluster, a humanitarian aid partnership led by the United Nations International Children's Emergency Fund (UNICEF), found that 15.6% of children under the age of 2 are acutely malnourished in northern Gaza, which has been isolated by the Israeli military and almost completely cut off from aid for weeks, compared to 5% in southern Gaza, where most aid enters the war-torn enclave. The acute malnutrition rate across Gaza was less than 1% before the war began last October, according to the report.

-ABC News' Morgan Winsor

Qatari officials said hostages held by Hamas in Gaza have received the medication that was part of a deal brokered last month.

The Israeli Prime Minister's Office said it has asked Qatar for evidence that the medicine was delivered.

"Israel will examine the credibility of the report and will continue to work for the peace of our abductees," the office said in a statement.

The U.S. voted against a resolution calling for an immediate cease-fire at Wednesday’s United Nations Security Council meeting, The Associated Press reported.

The U.S. was the only nation of the 15 permanent Security Council members to vote against the measure, according to the AP.

U.S. Ambassador to the U.N. Linda Thomas-Greenfield said "an unconditional cease-fire without any obligation for Hamas to release hostages" was irresponsible.

"While we cannot support a resolution that would put sensitive negotiations in jeopardy, we look forward to engaging on a text that we believe will address so many of the concerns we all share -- a text that can and should be adopted by the council, so that we can have a temporary cease-fire as soon as practicable, based on the formula of all hostages being released," she said.

The U.S. has been circulating its own draft resolution on Gaza that calls for a temporary cease-fire conditioned on the release of all hostages, while also condemning Hamas for the Oct. 7 attack that sparked the war, according to senior administration officials familiar with the matter.

If the proposal were to be adopted by the U.N. Security Council, it would mark the first time the body has formally condemned Hamas’ actions.

The officials say the draft also makes clear "that under current circumstances a major ground offensive into Rafah should not proceed" and that there can be no reduction in territory in the Gaza Strip or any forced displacement of Palestinians, while also calling on Israel "to lift all barriers to the provision of humanitarian assistance, open additional humanitarian routes, and to keep current crossings open."

The senior officials signaled that American diplomats wouldn’t rush the text to a vote and that they intended on "allowing time for negotiations."

While hostage talks have sputtered over the past couple of weeks, senior administration officials said they were making some progress.

"The differences between the parties, they have been narrowed. They haven’t been sufficiently narrowed to get us to a deal, but we are still hopeful and we are confident that there is the basis for an agreement between the parties," one official said.

-ABC News' Shannon Crawford

Israeli forces, which already entered Gaza’s Nasser Hospital, are also now operating inside the nearby Al-Amal Hospital, the Israel Defense Forces confirmed to ABC News.

"Al-Amal Hospital is currently under multiple attacks, as Israeli forces have directly targeted the third floor of the hospital, resulting in the burning of two rooms," and "the hospital’s water lines were targeted," the Palestine Red Crescent Society said.

Over 8,000 patients were evacuated from the hospital earlier this month, but almost 100 patients still remain inside, the Palestine Red Crescent Society said.

The Israel Defense Forces said Sunday that boxes of medicine intended for Israeli hostages, a large number of weapons and a vehicle belonging to a kibbutz that was attacked by Hamas terrorists on Oct. 7 were found during a raid at Nasser Hospital in the southern Gaza Strip.

The IDF said its soldiers located "medicines specifically designated for the Israeli hostages in Gaza, large quantities of weapons and a vehicle belonging to Kibbutz Nir Oz" during its operations in Nasser Hospital in the city of Khan Younis.

The IDF said it also apprehended "hundreds of terrorists and other suspects who were hiding in the Nasser Hospital, some posing as medical staff."

"Boxes of medicine were found with the names of Israeli hostages on them. The packages of medicine that were found were sealed and had not been transferred to the hostages," the IDF said.

-ABC Edward Szekeres