Ukrainian aerial and maritime drones struck Russian military targets on the annexed Crimean peninsula, a defence source in Kyiv told AFP Thursday, after Moscow reported an overnight drone assault.

Ukrainian forces have recently escalated drone and missile attacks on Russian military installations on the peninsula that was captured by Russian forces in 2014.

The source said an operation carried out by the navy and the Security Service of Ukraine (SBU) had damaged or disabled a command centre and an ammo depot among other facilities at Lake Donuzlav in western Crimea.