Kharkiv Mayor Igor Terekhov said in a statement that he believed ballistic missiles were used to attack the city.

Explosions were reported in Kharkiv, Dnipro, and other cities the morning of Dec. 25, as Russia launched a mass aerial attack across Ukraine. At least two civilians were hospitalized.

The drones were launched from Bryansk, Millerovo, and Primorsko-Akhtarsk in Russia, the military said. Read also: Shahed drones' components warehouse destroyed in Russia The attack was countered by anti-aircraft missile forces,

Ukrainian drones targeted a major Russian military airfield in a massive attack on Monday night. Eight UAVS were reportedly shot down over the Millerovo airbase, while another nine were downed over the Rostov region,

Russian forces have attacked Ukraine with 60 drones over the past 24 hours. Ukrainian air defence units have shot down 36 UAVs, while 23 decoy drones have disappeared from radar due to electronic warfare countermeasures.