Video images of the alleged attack posted on the Internet showed many rockets being fired from low altitudes, followed by an explosion. Reuters has not yet been able to verify the images. The helicopters hit the facility after crossing the border at low altitude, Regional Governor Vyacheslav Gladkov told the Telegram messaging app. Sign up now for FREE unlimited access to Reuters.com Register The resulting fire injured two workers, Gladkov added, while some areas in the city were evacuated near the Ukrainian border. However, the Russian oil company Rosneft (ROSN.MM), which owns the fuel depot, said in a separate statement that no one was injured in the blaze, although it did not provide information on the cause. The Ukrainian Ministry of Defense was not immediately available for comment. An ammunition depot near Belgorod caught fire on Wednesday, causing a series of explosions. At the time, Gladkov said authorities were waiting for the Russian Defense Ministry to reveal the cause. Moscow describes its action in Ukraine as a “special military operation.” Sign up now for FREE unlimited access to Reuters.com Register Report by Olzhas Auyezov? Edited by Clarence Fernandez Our role models: The Thomson Reuters Trust Principles.