Estonia has blamed Russia for planning and provoking the clashes in the past two nights in Tallinn after the removal of the Soviet war memorial in the centre of the capital, international media reported.
Foreign Minister Urmas Paet said Moscow had made provocative statements and meddled in Estonia's internal affairs.
One Russian protester was killed during the unrest and 153 people were injured and some 800 arrests made.
Estonians say the bronze soldier symbolises Soviet occupation while its supporters say it commemorates heroes who fought the Nazis.
Estonia's PM Andrus Ansip called on the Estonians to not let hatred divide the country. He assured the monument is intact and the remains of the Russian soldiers will be moved to the military cemetery.
Russian President Vladimir Putin has voiced serious concern over the removal of the World War II monument.