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Air raid sirens have sounded across Ukraine after Russia launched a fresh wave of drone and missile strikes on Monday.
Explosions were heard overnight in the capital, Kyiv, where the mayor said five people had been injured in the "biggest" kamikaze drone attack so far, reports BBC.
One person was killed in the attack on the southern Odesa region. Ukraine's Red Cross says its warehouse was hit.
The attack marks the fourth attack in eight days on Kyiv and comes just 24 hours before Russia celebrates Victory Day.
The annual holiday commemorates the Soviet Union's victory over Nazi Germany during World War second, a conflict the Kremlin has baselessly tried to draw parallels with since launching its invasion of Ukraine last year.
After a lull in Russian attacks on civilian targets in recent months, which saw Kyiv go days without an attack, Moscow has intensified its air raids over the past week ahead of a widely expected Ukrainian counter-offensive.
The Ukrainian military said the latest Russian raids - which lasted for more than four hours and were launched shortly after midnight - saw Iranian-made Shahed kamikaze drones swarm across the country.
Kyiv's Mayor Vitaliy Klitschko said nearly 60 drones had been launched by Russia, describing it as the "biggest" such attack so far.
He added that all 36 drones had been destroyed over Kyiv, but five people had been injured by falling debris from downed drones.
Bd-pratidin English/Golam Rosul
