According to a United Nations (U.N.) official, the death toll in Ukraine is "thousands higher" than previously reported.

Matilda Bogner, the head of the U.N. Human Rights Monitoring Mission in Ukraine (HRMMU), told reporters that the organization is preparing estimates.

"The actual figures are higher and we are working to corroborate every single incident," she said.

Since the commencement of the war, the international organization has recorded 3,459 civilian deaths across the country.

Bogner termed Mariupol a "black hole;"; access to the southeastern port has been restricted as Russian soldiers continue their assault.

She also mentioned that the United Nations had received allegations of more than 300 men, women, and children being unjustly slain in Bucharest.

OHCHR also reported 3,713 injuries.

Tuesday, Ukrainian officials said that Russian troops attacked the port of Odesa in an apparent effort to disrupt supply lines and Western arms shipments.

While Ukrainian fighters remained entrenched at the Azovstal steel factory in Mariupol, aircraft continued to launch attacks.

Previously, the United Nations and the Red Cross coordinated a rescue of what some officials believed to be the last individuals trapped at the plant.

However, two officials reported that an estimated 100 individuals were still believed to be in the complex's underground tunnels. Others said that it was impossible to confirm.

President Biden expressed concern on Monday that Russian President Vladimir Putin "doesn't have a way out" and would continue his ruthless battle to save face at home.

According to reports, he stated, "I'm trying to figure out what we do about that,"