Russia launched a massive attack on Ukraine overnight into Saturday with hundreds of drones, killing at least one person, part of a stepped-up bombing campaign that has dashed hopes for a breakthrough in efforts to end the more than 3-year-old war.

Russian strikes killed three people across Ukraine on Saturday, authorities said, while Moscow had to briefly suspend trains in its southern Rostov region after an overnight drone attack by Kyiv.

A missile hit a multi-story building in Odesa, killing one and injuring six. In Sumy, strikes damaged infrastructure, leaving thousands without power.