Israel-Gaza updates: Houthis claim 'hypersonic' missile attack on Israel

The Israel Defense Forces (IDF) published the results of its initial inquiry into last week's killing of American Aysenur Ezgi Eygi in the West Bank.

"The inquiry found that it is highly likely that she was hit indirectly and unintentionally by IDF fire which was not aimed at her, but aimed at the key instigator of the riot," the IDF press release stated, referring to a period of reported unrest at the Beita Junction.

"Israel has sent a request to carry out an autopsy," it added. "The IDF expresses its deepest regret over the death of Aysenur Ezgi Eygi."

Eygi, 26, was a dual Turkish-American citizen and activist working for the International Solidarity Movement in the West Bank, working to protect local Palestinian farmers from attacks by Israeli settlers.

-ABC News' Matt Gutman and David Brennan

The polio vaccination campaign in southern Gaza concluded on Monday with more than 446,000 children vaccinated since the drive began on Sept. 1, World Health Organization Director-General Tedros Adhanom Ghebreyesus said.

"Five health facilities will continue offering polio vaccination to make sure no child is missed," Ghebreyesus wrote on X. "We are grateful to the families for their cooperation, and to all vaccinators and health workers for their dedication."

The polio vaccination campaign is continuing elsewhere in Gaza, and Ghebreyesus said continued humanitarian pauses are "key" in facilitating the program.

"The children in Gaza deserve lasting peace, not just polio vaccines," Ghebreyesus said.

Israel's COGAT (Coordination of Government Activities in the Territories) organization and local officials confirmed that the polio vaccination campaign in northern Gaza began on Tuesday.

A United Nations Relief and Works Agency convoy carrying personnel to administer the northern campaign was stopped for eight hours at an Israel Defense Forces (IDF) checkpoint on Monday before being sent back to south Gaza.

The IDF said they "questioned a number of suspects" in the convoy before releasing everyone. It is unclear what the personnel were suspected of, or why they were not allowed to pass.

-ABC News' Jordana Miller, Nasser Atta, Victoria Beaule and David Brennan

The State Department is "urgently working to get more information" on the killing of American citizen Aysenur Ezgi Eygi in the West Bank last week, Principal Deputy Spokesperson Vedant Patel told journalists at a Monday briefing.

Eygi, 26, was an activist working for the International Solidarity Movement and was shot dead in the West Bank village of Beita on Friday. The dual American-Turkish citizen was allegedly killed by Israeli troops.

Patel told reporters that "our partners in Israel are looking into the circumstances of what happened, and we expect them to make their findings public, and expect that whatever those findings are, expect them to be thorough and transparent."

-ABC News' Jordana Miller and David Brennan

The Israel Defense Forces (IDF) said a Monday night strike on tents in a designated humanitarian zone in the southern Gaza Strip targeted Hamas figures "directly involved" in the Oct. 7 attack.

The Hamas-run Gaza Civil Defense reported at least 40 people killed and at least 60 injured in the bombing. Search and recovery efforts were underway at the scene on Tuesday.

The IDF said Tuesday that its strike targeted "senior Hamas terrorists" in a "command and control center embedded inside the humanitarian area in Khan Younis."

Among those killed were Samer Ismail Khadr Abu Daqqa, the head of Hamas' aerial unit in Gaza, the IDF said.

Osama Tabesh, the head of the observation and targets department in Hamas' military intelligence headquarters, and Ayman Mabhouh, another "senior Hamas terrorist" were also hit, the force said.

"According to an initial review, the numbers published by the Hamas-run Government Information Office in Gaza, which has consistently broadcast lies and false information throughout the war, do not align with the information held by the IDF, the precise munitions used, and the accuracy of the strike," the IDF statement added.

-ABC News' Jordana Miller and David Brennan