More than 7,000 people in Ukraine have died since Russia invaded the country in late February, according to a report Monday by the U.N. High Commissioner for Human Rights. The death toll included 398 children.

The same report revealed that more than 11,000 have been injured.

Such figures are highly difficult to verify. The report noted that the full civilian death toll could be "considerably higher."

"Most of the civilian casualties recorded were caused by the use of explosive weapons with wide-area effects, including shelling from heavy artillery, multiple-launch rocket systems, missiles, and air strikes," the U.N. High Commissioner for Human Rights said in the report.

The Russian offensive has not slowed. The death toll of a Russian strike on a nine-story apartment building Saturday in the Ukrainian city of Dnipro rose to 45, according to Ukrainian officials on Tuesday. Six of the deaths were children.

The death toll from the missile strike is expected to grow, as many remain missing.

Ukraine President Volodymyr Zelensky wrote on the Telegram messaging app that 79 people were injured.