Russian missiles struck the heart of the Ukrainian city of Sumy as people gathered to celebrate Palm Sunday, killing at least 34 people, officials said, in the second large-scale attack to claim civilian lives in just over a week.

The two ballistic missiles hit around 10:15 a.m., officials said. Images from the scene showed lines of black body bags on the side of the road, while more bodies were seen wrapped in foil blankets among the debris. Video footage also showed fire crews fighting to extinguish the shells of burned-out cars among the rubble from damaged buildings.

The dead included two children, the State Emergency Service of Ukraine said in a statement. A further 117 people were wounded, including 15 children, it said.

“Only filthy scum can act like this — taking the lives of ordinary people,” Ukrainian President Volodymyr Zelenskyy said. In a statement on social media, he said the first strike hit buildings belonging to a city university, while the second exploded above street level.

The head of the Ukrainian president’s office, Andriy Yermak, said cluster munitions were used to kill as many people as possible. The Associated Press was unable to verify that claim.

The attack on Sumy followed a deadly April 4 missile strike on Zelenskyy’s hometown of Kryvyi Rih that killed some 20 people, including nine children.