At least two people were killed after Russian forces launched drone strikes on Kyiv in the early hours of Tuesday, officials said.
Air raid sirens sounded across the Ukrainian capital and the noise of explosions was reported as the attacks took place, prompting residents to seek shelter and emergency services to respond.
The strikes came in the pre-dawn hours; authorities have given a preliminary death toll of at least two, but detailed information about the locations hit and the scale of material damage was not immediately available.
Further details on casualties, the identities of the victims, and any wider implications were still emerging. No immediate comment from Russian officials on the strikes was reported.