After earlier strikes, the Ukrainian military reported shooting down Russian missiles and explosive drones, but some still hit their targets, damaging power and water supplies and increasing the suffering of the population in the midst of freezing temperatures.

On Thursday, air defense systems were activated in the capital Kyiv to fend off the ongoing missile attack, according to the regional administration. Sounds of explosions were heard in the city.

At least three people were injured and hospitalized, including a 14-year-old girl, Mayor Klitschko said.

Numerous explosions also took place in Kharkiv, which is in eastern Ukraine and the country’s second-largest city, and in the city of Lviv, near the Polish border, according to its mayors.

About 90% of Lviv was without electricity, Mayor Andriy Sadovyi wrote on Telegram. Trams and trolleybuses were not working and residents could experience water cuts, he said.

Ukrainian authorities in several regions said that some incoming Russian missiles were intercepted.

People take shelter in the metro station in central Kyiv on Thursday.Efrem Lukatski / AP

The governor of Mykolaiv province in southern Ukraine, Vitaliy Kim, said five missiles were shot down over the Black Sea. The command of the Ukrainian Army North said two were shot down in the Sumy region, located on the border with Russia in the north-east of the country.

Fragments of downed Russian missiles damaged two private buildings in Kyiv’s Darnytskyi district, the city administration said. An industrial facility and a playground in neighborhoods across the Dnieper River were also damaged, city officials said. No casualties were immediately reported.

As the latest wave of Russian attacks began on Thursday, authorities in the Dnipro, Odessa and Kryvyi Rih regions said they cut power to minimize damage to critical infrastructure facilities if they were attacked.

Earlier this month, the United States agreed to give a Patriot missile battery Ukraine to boost the country’s defense. The United States and other allies have also pledged to provide energy-related equipment to help Ukraine resist attacks on its infrastructure.

Podolyak, an adviser to Zelenskyy, said Russia was aiming to «destroy critical infrastructure and kill civilians en masse.»