Around 60 people were killed after a bomb hit a school in east Ukraine, President Volodymyr Zelensky has said.
Earlier, the governor of Luhansk region, Serhiy Haidai, said 90 people had been sheltering in the building in Bilohorivka, and 30 were rescued.
Mr Haidai said a Russian plane had dropped the bomb on Saturday – Russia has not commented.
Luhansk has seen fierce combat as Russian troops and separatist fighters seek to surround government forces.
Much of the region has been under the control of Russia-backed separatists for the past eight years.
Bilohorivka is close to the government-held city of Severodonetsk, where heavy fighting was reported in the suburbs on Saturday. One Ukrainian newspaper, Ukrayinska Pravda, says the village became a “hot spot” during fighting last week.
The blast brought down the building which caught fire and it took firefighters three hours to extinguish the blaze, according to the governor, writing on Telegram.
He said almost the entire village had been sheltering in the basement of the school.
The final death toll would only be known when the rubble had been cleared, the governor said.
The UN Secretary General Antonio Guterres said he was “appalled” by the deadly attack, adding: “civilians must always be spared in times of war”.