At least five people have been killed in Russian strikes across Ukraine, after a massive overnight aerial bombardment targeted several regions across the country.

A 61-year-old woman was killed when a drone hit an electric train in Kharkiv early on Tuesday, authorities said, while other deaths were reported in Zaporizhzhia, Kherson, and Poltava.

Officials said the attacks were among the worst in ten days and came hours after Ukrainian President Volodymyr Zelensky had warned of a forthcoming massive strike in his nightly address.

Russian strikes targeting energy infrastructure also disconnected Moldova's key power link with Europe, President Maia Sandu said, warning the situation remained fragile.

Sirens wailed across Ukraine on Monday night as Russia launched a barrage of missiles and drones at the country. Seven ballistic missiles, 23 cruise missiles, four air-launched guided missiles, and 392 drones were used in the attack, according to the Ukrainian Air Force.

Air defense units intercepted 25 missiles and 365 drones, it added.

In a post on X, Zelensky stated, These numbers clearly show that more protection is needed to save lives from Russian strikes. It is important to continue supporting Ukraine. Attacks of this scale have been occurring roughly once a week or every ten days in recent months, leading to fears of another imminent strike.

This time, the attack focused on cities other than the capital, Kyiv. Damage was reported in eleven regions, according to Zelensky.

Among the hardest hit was Zaporizhzhia, struck by six drones followed by six ballistic missiles, resulting in one death and nine injuries after a residential building was hit. Local resident Dymtro Zaiets recounted his family's terrifying experience during the attack.

Elsewhere, at least two people were killed and 12 more injured when strikes hit buildings in Poltava. A civilian was also killed in Kherson due to Russian shelling. Attacks extended to other areas, including injuries reported in the Dnipropetrovsk region and Sumy.

The Moldovan government condemned the strike on energy infrastructure that led to the disconnection of the Isaccea-Vulcanesti power line, critical for importing electricity from Romania, emphasizing concerns over regional energy security.

The recent strikes coincide with a slowdown in Russia's military advances in eastern Ukraine, as Ukrainian forces report minor counteroffensives. Ukraine's air defense systems are also challenged by escalating tensions and conflicts elsewhere, particularly in the Middle East.