Ukrainian 'sabotage group' crosses border into Russia's Belgorod
Russian and Ukrainian officials are pointing fingers at each side, blaming each other for responsibility of the attack.
Russian military vehicles and army tents are seen in a field outside the village of Severny in Belgorod region near the Russian-Ukrainian border, April 25, 2014(photo credit: REUTERS/SERGEI KHAKHALEV)ByREUTERSUpdated: