Russia vows to ramp up Kyiv attacks a day after loss of Moskva missile cruiser

Russia has vowed to ramp up missile attacks on Kyiv a day after the sinking of one of its flagship vessels in the Black Sea.

Ukrainian officials say they hit the Moskva with missiles, while Russia claims there was a fire onboard the vessel but no attack.

Western officials could not confirm what started the blaze.

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Russia’s Defence Ministry promised to intensify its assault on Kyiv in response to Ukraine's alleged military "diversions on the Russian territory".

Russian authorities accused Ukraine of wounding seven people and damaging about 100 residential buildings with air strikes on Bryansk - a region that borders Ukraine.

Authorities in another border region of Russia also reported Ukrainian shelling on Thursday.

Kyiv has gradually displayed some signs of pre-war life after Russian troops failed to capture the city and retreated to focus on a concentrated assault in eastern Ukraine.

Watch: Turning former military vehicles into ambulances for Ukraine.

A renewed bombardment could return the capital’s residents to sheltering in subway stations and the steady wail of air raid sirens.

Ukrainian officials have not confirmed striking targets in Russia, and the reports by Russian authorities could not be independently verified.