Russia has carried out its largest air attack on Ukraine in months, launching 120 missiles and 90 drones that killed several people and caused severe damage to the power system, officials said.

Ukrainian President Volodymyr Zelenskyy said on Sunday that his country’s defences shot down 140 air targets across Ukraine. Various types of drones were deployed, he said, including Iranian-made Shaheds as well as cruise, ballistic and aircraft-launched ballistic missiles in one of the largest barrages of the nearly three-year war.

The enemy’s target was our energy infrastructure throughout Ukraine. Unfortunately, there is damage to objects from hits and falling debris,” Zelenskyy said in a statement on the Telegram messaging app.

The state grid operator Ukrenergo announced nationwide emergency power restrictions for Monday. Two power cuts of several hours are planned between 6am and 10pm (04:00-20:00 GMT), the company announced on Telegram.

A Russian drone attack on the southern Ukrainian city of Mykolaiv killed at least two people and wounded six others, including children, Zelenskyy said, adding that “all areas” were left without power.