Ukraine attacked a steel plant belonging to Russia's Novolipetsk RAO with drones overnight in a joint operation by the GUR military intelligence agency and SBU security service, a Ukrainian source said on Saturday.
The source told Reuters the attack had caused a major fire at the plant and staff had been evacuated.
"Raw materials from this enterprise are used to manufacture Russian missiles, artillery, drones. Therefore, it is a legitimate goal for Ukraine," the source said, without specifying the location of the plant.