Displaced Palestinian children take part in an entertaining activity organised by local activists, at a school run by United Nations Relief and Works Agency, to support the mental health of the children. Reuters

Children and women make up the bulk of the nearly 28,000 people killed during the offensive, according to the authorities in Gaza.

"The rights of children living under the state of Israel's effective control are being gravely violated at a level that has rarely been seen in recent history," said Ann Skelton, chair of the UN Committee on the Rights of the Child.

"We call for massive psychosocial support for children and families to relieve the traumatic and long-lasting impact of war, including Israeli children who were victims of, or witnesses to, the (Oct.7) attacks and those whose family members have been taken hostage," she told a news conference.

The Israeli diplomatic mission in Geneva said it would issue a statement on the UN committee's comments shortly.

UNICEF said last week that nearly all children in Gaza were thought to require mental health support.

Skelton said Israel had postponed its participation in a planned dialogue on child issues and that it was now scheduled to take place in September.

"The committee deeply regrets that it did not have the opportunity to review Israel when time is of the essence," she said.

Skelton also voiced concern for children living in the occupied West Bank, which she said faced "facing arbitrary arrests, extrajudicial killings and violence committed by occupying forces and settlers."

Reuters