Ukraine's air defense systems shot down 16 out of around 30 drones that Russia launched on Ukraine's territory overnight, Ukrainian Air Forces said on Sunday.
It said on Telegram messaging app that drones were launched from the southern, southeastern and northern directions.
Authorities said the central Ukrainian Cherkasy region was under the attack.
"At night, the enemy massively attacked our Cherkasy region with attack drones. Unfortunately, there were hits on industrial infrastructure in (the city of) Uman," Cherkasy Governor Ihor Taburets said on Telegram.
"As a result, fires broke out in warehouses. In particular, where grain was stored," he said, adding that one person was injured.
Reuters could not independently verify the report.