June 21 (Reuters) - Russian air defences downed three drones in the Moscow region on Wednesday, the Defence Ministry said, in what it called an attempted Ukrainian attack. The ministry said Russian defences had used electronic jamming to cause the drones to lose control and crash, without causing any casualties or damage. Reuters could not independently verify details of the incident or determine who had launched the drones. Moscow regional governor Andrei Vorobyov said two of the drones in Wednesday's incident were intercepted as they approached military warehouses. Self-styled partisan groups have reported frequent attacks on Russian rail infrastructure, sometimes resulting in derailments, during the 16 months since Russia invaded Ukraine.

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Persons: Andrei Vorobyov, Sergei Aksyonov, Lidia Kelly, Felix Light, Mark Trevelyan, Andrew Osborn, Peter Graff Organizations: Defence Ministry, TASS, Taman Division, Russia's, Forces, Thomson Locations: Moscow, Ukrainian, Ukraine, Kalininets, Russian, Crimea, Feodosia, derailments, Russia