Rescue crews worked through mountains of rubble in Kyiv on Friday as Ukraine observed a day of mourning following Russia's deadliest attack on the capital this year, while fresh strikes on both sides underscored the relentless pace of the war.

At least 30 people were killed and 92 injured after Russia launched a massive barrage of missiles and drones against Kyiv on Thursday, according to city officials.

Emergency workers continued searching collapsed apartment buildings for survivors for a second straight day as forensic teams worked to identify victims.

Kyiv Mayor Vitali Klitschko said the parents of a hospitalized 10-year-old boy and a 15-year-old girl remained missing beneath the debris.

Flags flew at half-staff across the capital as residents gathered to honor the victims of one of the most destructive assaults on Kyiv since Russia launched its full-scale invasion in February 2022.