Russia 's Security Service investigating country 's state - run gas company . Ukraine 's Security Service launched a raid on the country 's state-run gas company Wednesday , searching for documents related to a gas deal with Russia , a spokesman for the company said . Naftogaz : It was to search for documents related to gas deal with Russia . Security Service investigating alleged theft of gas by Naftogaz officers .
Russia 's Security Service investigating country 's state - run gas company . Naftogaz : It was to search for documents related to gas deal with Russia . Security Service investigating alleged theft of gas by Naftogaz officers .