Israel-Gaza updates: Israeli forces preparing for 'wide range of offensive plans'

In a new clip from a "60 Minutes" interview, set to air in full Sunday on CBS, President Biden says he feels strongly about doing this so the families know that their president "cares deeply" about what has happened and will do "everything in our power to get them home if we can find them."

"I think they have to know that the president of the United States of America cares deeply about what's happened to them, deeply. We have to communicate to the world--this is critical, this is not even human behavior. It's pure barbarism. And we're going to do everything in our power to get them home if we can find them," Biden said in the short clip.

-ABC News' Mary Bruce and Molly Nagle

Secretary of Defense Lloyd Austin arrived in Tel Aviv early Friday morning and will meet with Israeli leaders face-to-face to "underscore the unwavering support of the U.S. for the people of Israel and commitment to ensuring Israel has what it needs to defend itself," according to a Department of Defense statement.

"While in Israel, Secretary Austin will meet with Prime Minister Benjamin Netanyahu, Minister of Defense Yoav Gallant, and the Israeli War Cabinet. He will also see firsthand some of the U.S. security assistance delivered to Israel. This is Secretary Austin’s second visit to the country this year, and his third as Secretary of Defense," the statement read.

The U.N. Agency for Palestine Refugees relocated its central operation center and international staff to southern Gaza, the UNRWA said in a post on X early Friday morning local time.

“UNRWA relocated its central operations centre + international staff to the south to continue its humanitarian operations and support to its staff and Palestine Refugees in #Gaza. We urge the Israeli Authorities to protect all civilians in @UNRWA shelters including schools,” the statement read.

The announcement comes as Israel Defense Forces called for "all residents of Gaza City to evacuate their homes" and "move south for their protection" early Friday morning.

-ABC News' Ellie Kaufman

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