Russia launched 42 drones and six missiles at Ukraine overnight, with Ukraine's air defence systems destroying 41 drones but debris damaged buildings, warehouses and injured 11 people in southern regions, the Ukrainian military has said.
"The defenders of the sky managed to shoot down 41 out of 42 Shahed-136/131 attack drones.
"The vast majority of them were shot down in Odesa region," Ukrainian Air Force said on Telegram messaging app.
Reuters could not independently verify the air force's report. There was no immediate comment from Russia.
Most of the drones were downed in the Odesa region in south Ukraine.
Ukrainian military said the wreckage of downed drones damaged more than a dozen buildings in Odesa and 11 civilians, including three children, were injured.
The military said Russia attacked port infrastructure in the Danube region and debris damaged the warehouses of two grain storage facilities.
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Elsewhere, air raid sirens and at least two loud explosions rang out over Kyiv, in an apparent attack by Russian forces, which have recently only targeted the capital at night.
AFP journalists in the city said two blasts had echoed over Kyiv, shortly after Russian President Vladimir Putin concluded an end-of-year press conference in which he vowed to continue Russia's nearly two-year invasion of Ukraine.
Ukraine's main phone operator recovering after cyberattack
The attacks come as Ukraine's main mobile operator Kyivstar is still recovering from the consequences of a cyberattack that Kyiv blamed on Russian hackers, which paralysed its networks two days ago.
Phone calls have mostly resumed but Kyivstar, which has over 24 million subscribers, said it would need a few days to re-establish other services.
"Region by region, we will carefully start restoring mobile Internet services," said Oleksandr Komarov, the head of Kyivstar, adding the process may take until the end of the week.
He said 99% of phone calls had been restored, while fixed internet access worked again for one million households.
Several subscribers living in Kyiv were only able to reconnect briefly today, before the signal disappeared again.
"Restoring a telecom network after a large-scale hacker attack is a complex process," Kyivstar said earlier.
"We continue to cooperate with the SBU (security service) and other state authorities to clarify all the details of the incident."
Mr Komarov said hackers had likely been able to penetrate Kyivstar's security systems through the account of an employee of the company.
He added that the employee possibly "gave his password" to the hackers.
Since the start of the Russian invasion in February 2022, Kyivstar has repelled "around 500 more or less serious cyberattacks," Mr Komarov added.
