At least four civilians killed by Russian strikes in Ukraine

Four people have been killed and five more injured by Ukrainian shelling in the town of Lgov in Russia's Kursk region, according to the region's acting governor.

Alexander Khinshtein says a five-storey building, two single-storey residential buildings, and a single-storey beauty salon were damaged.

Parts of the Kursk region are occupied by Ukraine following its surprise cross-border offensive in early August.

While Russia's Christmas Day attack focused on energy infrastructure, civilian buildings have also been hit and damaged.

Residential buildings were damaged in Kharkiv by the Russian airstrikes.

New pictures from the city show residents returning to see their homes destroyed.

There are power cuts and planned outages across the country, including in parts of Kyiv.

In Kyiv, people sheltered in metro stations - "It's scary to stay at home," one woman says.

UK Prime Minister Sir Keir Starmer has condemned Russia's "ongoing assault" on Ukraine's energy infrastructure.

"I pay tribute to the resilience of the Ukrainian people, and the leadership of President Zelensky, in the face of further drone and missile attacks from Putin's bloody and brutal war machine, with no respite, even at Christmas."

He adds that it remains "vital" to redouble efforts to "place Ukraine in the strongest possible position to end Russia's illegal aggression".

The regional head of Kharkiv, Oleg Sinegubov, has urged people to stay indoors during the Christmas season, because of the threat of Russian attack.

"We urge residents of the Kharkiv region to spend the holidays at home, avoiding crowded places, because the enemy is insidiously launching drones and missiles, including in the city centre," he says.

Boris Filatov, the mayor of Dnipro, says that as of 14:30 local time (12:30 GMT), gas, water, and electricity supplies have been restored in the city, but about 65 houses are still without heat.

According to the UK's Met Office, the temperature in Dnipro is currently 4°C.

Filatov also reports that there are 300 broken windows across the city, and seven educational institutions have been damaged.

Additionally, he mentions that the city needs to evacuate one of its hospitals, where more than 100 patients are being cared for. These patients will be moved to other medical facilities in the city.

"We are not folding our hands," says Filatov. "We are helping each other."

President Volodomyr Zelensky says Russia made a "conscious choice" to launch attacks at Christmas.

Ukraine's air force says it detected 184 missiles and drones - many were shot down or missed their target.

Russia confirms what it calls the "massive" attack, saying the "goal was achieved".