Explosions echoed over Kyiv on Tuesday and Ukrainian officials urged residents to take shelter during a rare daytime Russian drone attack on the capital.
Russia has pummeled Ukrainian cities for more than four years since invading the country, mainly launching long-range aerial barrages at night.
AFP journalists in Kyiv heard air raid sirens ring out and at least one loud boom over the city shortly after 14:15 (1115 GMT).
City officials announced that air defense systems were operating against Russian drones flying over the city.
The air raid alert was lifted after 49 minutes, according to an official notification system. The mayor of Kyiv, Vitali Klitschko, said two people were hurt as a result of the attack.
Kyiv and Moscow have stepped up their aerial attacks over recent months, with both sides mainly targeting energy infrastructure.
