NEW : Crimea 's first vice - premier says situation is quiet . NEW : Ukrainian border official describes attack in Kerch . Conflicting reports are received from Kiev and Moscow . Crimea is last major state under the new political leadership in Ukraine .
NEW : Crimea 's first vice-premier says situation is quiet . NEW : Ukrainian border official describes attack in Kerch . Conflicting messages are coming from Kiev and Moscow . Crimea is last major stronghold opposing the new political leadership in Ukraine .