KYIV, Ukraine (AFP) — Ukrainian President Volodymyr Zelensky and the US embassy in Kyiv issued warnings Saturday about the risk of a major Russian airstrike in the coming hours.

Their alerts came after Russian officials said the death toll from a Ukrainian strike on a college and its dormitory in a Russian-occupied town in eastern Ukraine had risen to 18.

Zelensky, posting on social media, said: “Our intelligence services reported receiving data, including from American and European partners, about Russia preparing a strike with the Oreshnik missile” — a Russian, nuclear-capable device.