MOSCOW/KYIV - A nighttime drone attack by Ukraine killed four people and injured another in Russia's Samara region, regional Governor Vyacheslav Fedorishchev said on Saturday.

"It is with deep sorrow that I report that four people were killed as a result of a night attack by enemy UAVs," Fedorishchev said on social media.

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Another person was injured, and the regional government will provide the families of the victims with necessary assistance, including financial support, he added.

The Russian defense ministry said Saturday that air defense systems shot down 149 drones overnight, including 15 over the Samara region.

Also on Saturday, a large-scale overnight Russian drone and missile attack killed at least three people and injured dozens more, Ukrainian President Volodymyr Zelensky said .

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The airstrikes targeted infrastructure, civilian enterprises and residential areas in nine regions across Ukraine, Zelensky said on social media Telegram.

In the central city of Dnipro, a missile carrying cluster munitions directly hit an apartment building, he added.

According to the Ukrainian Air Force, air defense systems intercepted more than 550 drones and over 30 missiles during the attack. It said that 10 locations across the country were struck, and warned residents to follow safety rules.