<sod >The Ukrainian authorities said the assassin had been identified as a Ukrainian citizen, although he may be an ethnic Russian from the breakaway east of the country or from the Crimea.< eod>< sod > Ukrainian Prosecutor-General Yuriy Lutsenko told the Kyiv Post: 'The bodyguard was shot in the chest, but he is alive and cooperating with investigators. The killer was shot twice, in the chest and head, which makes it impossible to depose him at the present time.'  The Ukrainian authorities said the assassin had been identified as a Ukrainian citizen, although he may be an ethnic Russian from the breakaway east of the country or from the Crimea.< eod>