Hundreds of UN staff at the Office of the High Commissioner for Human Rights (OHCHR) Volker Turk, have asked him to explicitly describe the Gaza war as an unfolding genocide, according to a letter seen by Reuters.

The letter sent on Wednesday said the staff consider that the legal criteria for genocide in the nearly two-year Israel-Hamas war in Gaza have been met, citing the scale, scope and nature of violations documented there.

“OHCHR has a strong legal and moral responsibility to denounce acts of genocide,” said the letter signed by the Staff Committee on behalf of over 500 employees, which called on Turk to take a “clear and public position”.

“Failing to denounce an unfolding genocide undermines the credibility of the UN and the human rights system itself,” it added.

It cited the international body’s perceived moral failure for not doing more to stop the 1994 Rwanda genocide that killed more than 1 million people.

There was no immediate response from the Israeli Foreign Ministry. Israel has previously rejected accusations of genocide in Gaza, citing its right to self-defence following the deadly October 7, 2023, Hamas attack that killed 1,200 people and resulted in 251 hostages, according to Israeli figures.

The subsequent war in Gaza has killed almost 63,000 people, according to the Gaza Health Ministry, while a global hunger monitor says that part of it is suffering from famine.

The Geneva-based agency was created in 1993 and tasked with promoting and protecting human rights for all.

The appeal to Turk, an Austrian lawyer who has worked for the United Nations for decades, was backed by around a quarter of his 2,000 global staff.

Some rights groups like Amnesty International have already accused Israel of committing genocide and an independent UN expert, Francesca Albanese, has also used the term, but not the United Nations itself.

UN officials have in the past said that it is up to international courts to determine genocide.In 2023, South Africa brought a genocide case against Israel’s actions in Gaza to the International Court of Justice, but the case has not yet been heard on its merits yet a process that can take years.