The embattled agency of the UN Palestinian Refugee has accused Israel of abuse of dozens of military detainees and used some as human shields.

Philippe Lazzarini, head of the agency, said more than 50 employees, including teachers, doctors and social workers, have been detained and abused since the 18-month war in Gaza began.

"They are treated in the most shocking and inhumane way. They report being beaten + used as human shields," Lazzarini wrote on X.

The detained person is subject to “sleep deprivation, humiliation, threat of harm to them and their families + attacks by dogs… and forced confessions”.

UN officials said the reported abuse has been carried out in military detention centers in Gaza and Israel.

The Israeli military has not responded directly to Razalini's allegations, but has previously denied allegations of widespread abuse in its detention center and its troops.

However, during the war it had begun to abuse the individual soldiers, as well as the investigation of using detainees as human shields, and in some cases allegations against service personnel.

The Palestinian Red Crescent Society (PRCS) said on Tuesday that Israel has released a medical worker since the deadly and controversial Israeli forces attacked ambulances on March 23.

Eight Chinese staff members, six staff members of the Gaza civil defense agency and one UNFA employee were killed in the attack, according to the UN Humanitarian Office OCHA.

The killings sparked international condemnation, including UN High Commissioner for Human Rights Volker Türk's concern about possible war crimes.

Relations between Israel and the North Station have plummeted since the war began, triggered by an unexpected attack on Hamas militants in southern Israel in October 2023, during which they killed 1,200 people, mainly civilians, and killed 250 hostages.

Israel bans all cooperation with UNRWA activities in Gaza and occupied Western Bank earlier this year and claims the institution has been infiltrated by Hamas, an allegation that it has been subjected to fierce competition.

The International Court of Justice of the United Nations Supreme Court is currently hearing statements from dozens of countries and organizations, and then giving legal opinions on Israel’s humanitarian obligations to Palestinians. A key question is whether Israel's ban on UNRWA wages in Palestine is legal.

Instead of participating in the ICJ, Israel sees the hearing as “part of systemic persecution and legalization.” Foreign Secretary Gideon Saar said on Sunday the hearing was “another attempt to “politicize and abuse the legal process to persecute Israel”.

"The goal is to deprive Israel of the most basic right to defend itself," he said. "It is not Israel that should be tried. It is the United Nations and myopia. The United Nations has become a rotten, anti-Israeli and anti-Semitic body."

According to local health officials on Monday, the hearing exacerbated bombing in Gaza, which killed at least 27 Palestinians in the past 36 hours. The Israeli military said the air strike killed three armed commanders.

Palestinian health officials in the territory said that since mid-March 18, 2,151 people, including 732 children, have been killed since Israel broke a fragile ceasefire.

Israel imposed a tight lockdown on Gaza about two months ago, preventing all food, fuel, medicine and other items from entering. It said the measure was designed to force Hamas to release hostages and accuse it of systematic stealing of humanitarian aid.

Rights groups accuse Israel of using a “hunger strategy” that endangers the entire population and may make it a war crime.

Humanitarian workers say supply is sharply low, with most people eating one meal or less a meal a day. Major agencies such as the World Food Programme and near-outdoors have distributed their last stocks of flour and other basic foods, and medical staff say malnutrition is rising.

Hamas still holds 59 hostages, 24 of whom are believed to be alive, and most of the rest are released under a ceasefire agreement and other deals.

The families of the hostages on Tuesday called for the return of their loved ones' bodies. There are concerns that conditions and ongoing combat may lead to many being destroyed or quickly becoming unrecognizable.

"After we went through everything that day, it was impossible that my father's body would disappear from the earth," Bar Godard said.

Negotiations on the new ceasefire appear to have stalled, with reports of progress in the ongoing talks contradictory. Few observers expect breakthroughs in the near future, although analysts say Donald Trump's planned visits to Saudi Arabia, Qatar and the United Arab Emirates in May could lead to U.S. pressure on Israel, which has the potential to obtain a deal.

According to the Ministry of Health, Israeli forces have killed more than 52,000 Palestinians, mainly women and children, since the attack on Gaza.

Bombing and ground operations also destroyed a vast area, with about 80% of the population displaced, many of which had 10 or more.

Israeli Prime Minister Benjamin Netanyahu vowed to continue the attack until all hostages are returned and Hamas will either be destroyed or agree to disarm and leave the territory.