Two of Ukraine's military helicopters struck a fuel storage facility in the Russian city of Belgorod on Friday after crossing the border at low altitude, regional governor Vyacheslav Gladkov said.
The resulting blaze injured two workers, Gladkov added, while some areas in the city, located close to the Ukrainian border, were being evacuated.
(Reporting by Olzhas Auyezov; Editing by Clarence Fernandez)
