Explosions were heard in the centre of the Ukrainian capital Kyiv as drones shot down
Vitali Klitschko said blasts rocked the central Shevchenkivskyi district and emergency services had been dispatched.
Kyiv Governor, Oleksiy Kuleba says Air defence systems are at work.
The city’s military administration said a drone fragment had hit two administrative buildings in the city centre. There are no details yet of any casualties.
Ukraine has accused Iran of supplying Russia with “kamikaze” drones used in deadly attacks on 17 October, which Tehran initially denied.
Iran later admitted sending Moscow a limited number of drones “many months” before the war.
In response, Ukraine’s President Volodymyr Zelensky said this was a lie and that many more Iranian drones were being used.