utor ' s ▁Office ▁said ▁Russia ▁has ▁not ▁yet ▁received ▁any ▁evidence ▁from ▁Britain ▁on ▁L ug ovo y . ▁" We ▁have ▁not ▁received ▁any ▁evidence ▁from ▁London ▁of ▁L ug ovo y ' s ▁gu ilt , ▁and ▁those ▁documents ▁we ▁have ▁are ▁full ▁of ▁blank ▁spaces ▁and ▁contradict ions ." ▁ ▁L ug ovo y ▁had ▁visited ▁London ▁at ▁least ▁three ▁times ▁in ▁the ▁month ▁before ▁Lit vin en ko ' s ▁death ▁and ▁met ▁with ▁him ▁four ▁times . ▁L ug ovo y ▁met ▁with ▁Lit vin en ko ▁on ▁the ▁day ▁he ▁fell ▁ill ▁( Nov ember ▁ 1 ). ▁Tra ces ▁of ▁pol on ium - 2 1 0 ▁have ▁been ▁discovered ▁in ▁all ▁three ▁hot els ▁where ▁L ug ovo y ▁stayed ▁after ▁flying ▁to ▁London ▁on ▁ 1 6 ▁October , ▁in ▁the ▁P esc atori ▁restaurant , ▁D over ▁Street , ▁May f air , ▁where ▁L ug ovo y ▁is ▁understood ▁to ▁have ▁d ined ▁before ▁ 1 ▁November ▁and ▁ab o ard ▁two ▁aircraft ▁on ▁which ▁he ▁had ▁tra ve led . ▁He ▁was ▁treated ▁at ▁a ▁Moscow ▁hospital ▁for ▁sus pected ▁radiation ▁poison ing ▁but ▁decl ined ▁to ▁say ▁whether ▁he ▁had ▁been ▁cont amin ated ▁with ▁pol on ium - 2 1 0 , ▁the ▁subst ance ▁that ▁led ▁to ▁Lit vin en ko ' s ▁death ▁on ▁ 2 3 ▁November ▁ 2 0 0 6 . ▁ ▁Tim eline ▁of ▁L ug ovo y ▁invol vement ▁in ▁Lit