Israel Defense Forces called for "all residents of Gaza City to evacuate their homes" and "move south for their protection" early Friday morning local time in a series of posts on X.

The IDF told residents to move "and settle in the area south of the Gaza River."

The announcement was made, according to the IDF, because it plans to "operate significantly in Gaza City in the coming days" and wanted "to avoid harming civilians."

The IDF said in its posts that it believes Hamas terrorists are hiding in Gaza City, including in buildings with "innocent civilians” inside.

"[D]istance yourself from the Hamas terrorists who use you as a human shield," the post read.

The message was released a short time after the UN made a similar announcement, also citing Israel's military.

-ABC News' Ellie Kaufman

United Nations team leaders in Gaza were informed by their liaison officers in the Israeli military that "the entire population of Gaza north of Wadi Gaza should relocate to southern Gaza within the next 24 hours," a U.N. spokesperson said in a statement to ABC News.

"This amounts to approximately 1.1 million people," the spokesperson added.

"The United Nations considers it impossible for such a movement to take place without devastating humanitarian consequences," the spokesperson said.

-ABC News' Samy Zyara and Ellie Kaufman

Israelis in Tel Aviv held a candlelight vigil on Thursday for the victims of the Oct. 7 surprise terrorist attack by Hamas.

Ran Oren, who donated candles for the vigil, which was held around a fountain in central Tel Aviv, told Reuters that each candle donated represented each victim of the attack. He said the vigil was held in order to "light this dark moment."

Dozens of onlookers could be seen gathered around the makeshift vigil, some of them lighting candles along the fountain.

The vigil was first reported by Reuters.

Hospitals and the health system in the Gaza Strip are at a "breaking point," the UN World Health Organization said in a release Thursday.

"Hospitals have only a few hours of electricity each day as they are forced to ration depleting fuel reserves and rely on generators to sustain the most critical functions," the WHO said in the release. "Even these functions will have to cease in a few days, when fuel stocks are due to run out."

WHO said it documented 34 attacks on health care in Gaza since Saturday, Oct. 7. These attacks have resulted in "the death of 11 health workers on duty, 16 injuries and damages to 19 health facilities and 20 ambulances," the release said.

-ABC News’ Ellie Kaufman

While on a bipartisan congressional delegation trip to Israel, Senate Majority Leader Chuck Schumer and other members of the delegation were rushed into a bomb shelter in Tel Aviv to wait out a rocket attack, according to a social media post from Schumer.

"It shows you what Israelis have to go through," Schumer said in his post on X, which included a photo showing him and Republican Sen. Mitt Romney, a Romney staff and several others huddled in the small bomb shelter.