Georgia's security chief says Russian forces targeted three Georgian Coast Guard boats in the Black Sea port of Poti, and Georgian television has shown boats ablaze in the harbor. Russia's Foreign Minister Sergey Lavrov has denied that Russian troops were anywhere near the city. US President George W. Bush said Wednesday he was concerned that Russian forces have entered and taken positions in Poti, that Russian armored vehicles were blocking access to that port, and that Russia was blowing up Georgian vessels. Georgia's Security Council chief Alexander Lomaia said the boats were blown up by Russians. Georgia's Rustavi-2 television has shown images of burning boats but no evidence of Russian involvement.