Russian authorities said two people were killed after what they described as a "massive" Ukrainian drone attack on the Moscow region, and that an oil refinery in Moscow had also been hit.
Officials reported that the strikes caused casualties and damage in and around the capital, though details about the scale of destruction and the precise locations affected were limited. Russian state outlets used the word "massive" to describe the operation.
The attack prompted the suspension of flights at two airports serving the capital, officials said, leading to disruption of air travel. No further operational details about the airport suspensions were released.
The incident comes amid the ongoing conflict between Russia and Ukraine. Russian authorities provided the initial accounts of the casualties and damage; there was no immediate confirmation from Ukrainian officials in the reports.
Further information is likely to follow as authorities assess the extent of the damage and investigate the circumstances of the attack.