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 kilometers (1,120 miles) from the Ukrainian border, Kyiv officials claimed.

A Ukrainian pilot was killed and his F-16 fighter jet crashed as after Russia launched a huge aerial assault involving hundreds of drones and scores of missiles overnight, the Ukrainian military said on Sunday.