At least two people were killed and several others injured in a drone attack on the southern port city of Odesa, according to Mayor Gennadiy Trukhanov. In Russia, officials say all airports serving Moscow and St Petersburg were temporarily shut down due to Ukraine’s overnight drone attacks that did not cause any damage.

Officials say Ukraine was under an ongoing Russian ballistic missile and drone attack early Friday that wounded at least three people

The attack on Friday, which killed at least four people nationwide, came two days after Russia vowed retaliation for an audacious drone assault on its strategic bomber bases.