A Ukrainian drone attack at an industrial plant in central Russia has killed three people and injured 35 others, a Russian regional governor has said.

Ukraine has for months been using domestically produced long-range drones to strike plants, storage sites and logistical hubs deep inside Russian territory. In May last year, a Ukrainian drone hit an early-warning radar in the Russian city of Orsk, some 1,800 km from the Ukrainian border, Kyiv officials claimed.

Three people have been killed and 35 taken to hospital following an attack by Ukraine on a factory in the city of Izhevsk - more than 1,000km (620 miles) from the border, Russian authorities say.