Ukrainian security services were behind an overnight drone strike that caused a fire at a major metal plant in south-central Russia, a Ukrainian source said.
According to the source, a drone strike on the Novolipetsk Metallurgical Plant was organized by two Ukrainian intelligence services, the Security Service of Ukraine and Defence Intelligence of Ukraine.
"This is one of the largest metallurgical plants in Russia," the source said.
"The plant operates for the Russian military-industrial sector and executes a large number of government orders. Its raw materials are used to manufacture Russian missiles, artillery, drones, etc. Therefore, it is a legitimate target for Ukraine."
Video that surfaced on social media appeared to show a fire at the plant. According to the Ukrainian security services, drones hit the facilities intended for primary cooling of untreated coke oven gas.
Russian state news agencies quoted the governor of the Lipetsk region as saying that fire broke out in one of the plant's workshops and had been extinguished with no casualties. There was no threat of release of hazardous substances, the governor added, according to RIA-Novosti.
The governor cited preliminary information from Russian intelligence services saying the fall of an aircraft caused the fire, and said information and videos posted on social networks were being verified, RIA reported.