The incident occurred on June 13.
"At present, fighting is under way near Dolzhansk in the Ukrainian territory during the territory of Russia was shelled,” Markin went on to say.
He explained that the battle was taking place in the border area and that the shells were reaching the Russian territory.
A group of investigators has immediately left for inspecting and registering the evidence that the territory of Russia had been shelled.
Markin said that the Investigative Committee would pass a procedural decision after the inspection.