"Nine people asked for medical help ... three were injured, among the victims - one policeman who was injured in the head," - quotes the press service of the agency TASS.
Earlier, special forces using water cannons, tear gas and batons pushed protesters from the parliament building in Tbilisi. Police detained 18 protesters.
Later, the Georgian parliament resumed work.
Protests in Tbilisi began amid deputies not accepting constitutional amendments on elections.