An Israeli kibbutz confirmed Friday the death of three of its residents who were taken hostage by Hamas during the Oct. 7 attack.

Kibbutz Nir Oz announced that 85-year-old resident Aryeh Zalmanovich has died in Hamas captivity in the Gaza Strip. Zalmanovich was one of the founders of the kibbutz, which is located in southern Israel near the border with Gaza.

“Father of two sons and grandfather of five grandchildren. Aryeh was a man of the land all his life who was engaged in agriculture and field crops,” the kibbutz said in a statement. “A man of books and has a wide knowledge of history and knowledge of the country.”

Gaza's militant rulers, Hamas, released a video in mid-November that appeared to show Zalmanovich looking ill. The group claimed he had later died.

Kibbutz Nir Oz also announced that 54-year-old resident Ronen Engel has died in Hamas captivity in Gaza. The kibbutz described Engel as a "photographer, MDA volunteer and motorcycle enthusiast." His wife and two daughters were also kidnapped to Gaza on Oct. 7 and released this week, according to the kibbutz.

A third resident of kibbutz Nir Oz, 56-year-old resident Maya Goren, was also confirmed to have died in Hamas captivity in Gaza. Her husband was among those killed on Oct. 7, according to the kibbutz.

"Maya was a hardworking and dedicated kindergarten teacher, and gave loving care to the kibbutz children for many years," the kibbutz said in a statement.

-ABC News' Yael Benaya and Morgan Winsor

Israel will no longer hold fire as negotiations with Hamas progress, an Israeli security source told ABC News on Friday.

The source said Israeli forces will only cease-fire for 24 hours if Hamas sends a list of at least 10 hostages to be released, the list is approved by Israel and everyone on that list is safely returned home.

-ABC News' Matt Gutman

United Nations High Commissioner for Human Rights Volker Turk warned Friday that the resumption of hostilities between Israel and Hamas in the Gaza Strip is "catastrophic," with the situation now "beyond crisis point."

"I urge all parties and states with influence over them to redouble efforts, immediately, to ensure a ceasefire -- on humanitarian and human rights grounds," Turk said in a statement.

-ABC News' Edward Szekeres and Morgan Winsor

Qatar announced Friday morning that efforts to renew a truce between Israel and Hamas "are continuing," despite the resumption of Israeli bombardment in the Gaza Strip.

Qatar, along with Egypt and the United States, have mediated the talks between Israel and Hamas.

"The State of Qatar expresses its deep regret at the resumption of the Israeli aggression against the Gaza Strip following the end of the humanitarian pause, without reaching an agreement to extend it," the Qatari Ministry of Foreign Affairs said in a statement. "The Ministry of Foreign Affairs confirms that negotiations between the two sides are continuing with the aim of returning to a pause. It also clarifies that the State of Qatar is committed, along with its mediation partners, to continuing the efforts that led to the humanitarian pause, and will not hesitate to do everything necessary to return to calm."

"The Ministry stresses that the continued bombing of the Gaza Strip in the first hours after the end of the pause complicates mediation efforts and exacerbates the humanitarian catastrophe in the Strip, and in this context calls on the international community to move quickly to stop the violence," the statement continued. "The State of Qatar reiterates its condemnation of all forms of targeting civilians, the practice of collective punishment, and attempts to forcibly displace and displace citizens of the besieged Gaza Strip, and its demand for an immediate ceasefire and to ensure the continuous and unhindered flow of relief convoys and humanitarian aid, in a way that meets the actual needs of the residents of the Strip."

-ABC News' Edward Szekeres and Morgan Winsor