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

Fighting is ongoing after Hamas launched an attack on Israel on Oct. 7.

At least 1,400 people have died and 3,400 others have been injured in Israel after the militant group Hamas launched an unprecedented incursion from air, land and sea on Oct. 7, Israeli authorities said.

In Gaza, 3,000 people have been killed and another 12,500 were injured, according to the Palestinian Ministry of Health.

Tensions are high with the prospect of ground war and evacuation orders for Gaza after the Israel Defense Forces called for "all residents of Gaza City to evacuate their homes" and "move south for their protection" early Friday, saying residents should 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."

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Timeline: The Hamas attack and response

On the morning of Oct. 7, sirens echoed across Israel as Hamas terrorists began a full-fledged surprise attack from the air, sea and ground. Hundreds of armed Hamas fighters stormed into Israel from Gaza, charging into cities and gunning down citizens.

Israeli forces responded by sending wave after wave of bombs into Gaza, killing thousands, trapping civilians and raising fears of a wider conflict in the Middle East.

Click here for the full timeline


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Sen. Cory Booker was in Jerusalem during Hamas attack, sheltered for safety

New Jersey Sen. Cory Booker arrived in Israel on Friday for several days of planned meetings and was in Jerusalem when the attacks began, Maya Krishna-Rogers, a spokesperson, said in a statement Sunday.

He sheltered in place with his staff and safely departed the country earlier Sunday, according to the statement.

Booker was in Israel for "planned meetings and site visits ahead of the start of an Abraham Accords-focused N7 summit on regional economic integration in Tel Aviv, at which he was scheduled to speak on Tuesday," the statement read.

-ABC News' Mariam Khan


20,000 Palestinians sheltering in schools: UN agency

The U.N. agency for Palestinian Refugees said more than 20,000 people are sheltering in schools around Gaza.

-ABC News' Joe Simonetti


IDF evacuating Israelis from towns near Gaza border

The IDF said it's evacuating Israeli civilians from at least two dozen towns along the Gaza border within the next 24 hours.

-ABC News' Joe Simonetti


Pentagon: US will 'rapidly' send munitions to Israel

The U.S. is sending a carrier strike group to the eastern Mediterranean to bolster deterrence in the region and "will be rapidly providing the Israel Defense Forces with additional equipment and resources, including munitions," according to a statement from Defense Secretary Lloyd Austin on Sunday.

"Today, in response to this Hamas attack on Israel, and following detailed discussions with President Biden, I have directed several steps to strengthen Department of Defense posture in the region to bolster regional deterrence efforts," he said.

The U.S. materiel support will begin shipping today and will arrive in the coming days, according to Austin.

The strike group will include the USS Gerald R. Ford aircraft carrier, the guided-missile cruiser USS Normandy and four guided-missile destroyers -- the USS Thomas Hudner, USS Ramage, USS Carney and USS Roosevelt, Austin said.

The U.S. will also boost its F-35, F-15, F-16 and A-10 fighter squadrons in the region, according to the defense secretary.

"The U.S. maintains ready forces globally to further reinforce this deterrence posture if required," he said.

-ABC News' Matt Seyler


14 UN humanitarian workers killed in Gaza, officials say

Fourteen staff members from the United Nations Agency for Palestine Refugees have been killed in airstrikes on the Gaza Strip, United Nations Relief and Works Agency Commissioner-General Philippe Lazzarini said during remarks from the UNRWA headquarters in Jerusalem on Sunday.

Most of the UNRWA's 13,000 staff members in the Gaza Strip have now been displaced or are "out of their homes," Lazzarini added.

Unless supplies are brought into Gaza, UNRWA and other international aid workers will not be able to continue humanitarian operations, Lazzarini said.

"As I speak with you, Gaza is running out of water and electricity," Lazzarini said.

At least 400,000 people who have been displaced in Gaza are currently sheltering in UNRWA schools and buildings, most of which have not been equipped as emergency shelters, Lazzarini said.

-ABC News' Ely Brown