"According to data obtained by Russian federal subjects on costs of the accommodation of Ukrainian refugees, Russia has suffered damage amounting to more than four billion rubles," committee spokesman Vladimir Markin said.
In April 2014, Kiev launched a military operation against independence militias in Ukraine’s eastern Donbas region.
According to Russia's Federal Migration Service, more than 1 million people fled to Russia following the outbreak of the civil war in Ukraine, of whom approximately 600,000 decided to settle there permanently.
Russia's Investigative Committee, the country's main investigating authority, said Thursday it had questioned nearly 112,000 witnesses and victims of possible war crimes in Ukraine.
"During the preliminary investigation of [war crime] criminal cases, 111,834 people were questioned as witnesses and victims, including 22,193 victims and 89,641 witnesses," committee spokesman Vladimir Markin said.