A Ukrainian drone strike killed one person and injured three others in the Russian city of Voronezh on Saturday, local officials said Sunday.

Regional Governor Alexander Gusev said a young woman died overnight in a hospital intensive care unit after debris from a drone struck a house. Three others were wounded, and more than 10 apartment buildings, private homes, and a high school were damaged. He added that Voronezh air defenses shot down 17 drones during the attack. The city, with just over 1 million residents, is located about 250 kilometers (155 miles) from the Ukrainian border.

The attack followed a heavy Russian assault on Ukraine the previous day, when hundreds of drones and dozens of missiles targeted Ukrainian cities, killing at least four people in Kyiv. For only the second time in the nearly four-year war, Russia launched a hypersonic missile, striking western Ukraine as a warning to Kyiv and NATO.

The barrage, including the nuclear-capable Oreshnik missile, came amid reports of progress in talks between Ukraine and its allies on defending the country against further Russian aggression under a potential U.S.-led peace plan. Ukrainian President Volodymyr Zelenskyy said Saturday that negotiators “continue to communicate with the American side,” and chief negotiator Rustem Umerov was in contact with U.S. partners.

Separately, Ukraine’s General Staff reported that Russia targeted the country with 154 drones overnight into Sunday, of which 125 were shot down.