• U.N. Secretary-General Antonio Guterres ordered an investigation on Monday into the deaths and injuries of children in Ukraine as the Russian conflict intensifies in the war-torn country.
• The findings will be published in the U.N.'s annual Children and Armed Conflict global report.
• U.N. High Commissioner for Human Rights Michelle Bachelet has previously said her office has mounting evidence that Russian forces carried out potential war crimes.
• The Kremlin has denied its forces target civilians.

UNITED NATIONS — U.N. Secretary-General Antonio Guterres has ordered an investigation into the deaths and injuries of children in Ukraine as the Russian conflict intensifies in the war-torn country.

Guterres called for the findings to be published in the U.N.'s annual Children and Armed Conflict global report which verifies accounts of abduction, sexual violence as well as other violations like the recruitment of children to fight in conflicts.

"In view of the ongoing war in Ukraine, including violations against civilians, including children, because of the high intensity of this conflict, this situation will be added as a situation of concern with immediate effect and will be included in my next report," Guterres wrote in this year's report, which was released on Monday.

Guterres also requested similar investigations to be carried out in Ethiopia and Mozambique.

Monday's report found more than 2,500 children were killed in global conflicts in 2021 and an additional 5,555 were maimed. The highest number of verified violations against children were documented in Yemen, Syria, Afghanistan, the Democratic Republic of the Congo, Somalia, Israel and the Palestinian territories.

The call for an investigation in Ukraine comes as U.N. High Commissioner for Human Rights Michelle Bachelet warns that her office has gathered mounting evidence that Russian forces carried out unlawful killings and summary executions.

Bachelet said that U.N. investigators have recovered more than 1,200 civilian bodies from Kyiv and that her office is working to corroborate more than 300 allegations of killings by Russian forces in situations that were not linked to active fighting.

In April, the U.N. voted to strip Russia of its membership in the Human Rights Council following accusations that Russian troops tortured and killed Ukrainian civilians in Bucha, a suburb near Kyiv.

The bodies were discovered after Moscow withdrew its troops from Bucha. Ukrainian President Volodymyr Zelenskyy described the aftermath, which he saw firsthand on Monday, as a "genocide" and accused Russia of war crimes.

The Kremlin has previously described its military actions in Ukraine as a "special operation" and has denied targeting civilians.

Last month, the U.N. Children's Fund, or UNICEF, said nearly two-thirds of Ukraine's children have been displaced since the start of the Kremlin's war in late February.

"I would say every single child in Ukraine, their lives have been touched by this war. They've either lost a family member or they have either witnessed trauma themselves," Afshan Khan, the regional director UNICEF, told reporters at the United Nations.

"With two-thirds of the children in the country on the move, we cannot say that a single child's life has not been touched," added Khan.

Khan also said that the staggering number of schools destroyed by Russian strikes in Ukraine presents another grim challenge for child development.