According to a journalist from the news agency AFP, people with EU flags and placards with slogans directed against the ruling party Georgian Dream have gathered outside the parliament.
The extensive demonstrations broke out after Prime Minister Irakli Kobachidze announced that all talks about EU membership would be frozen for four years.
The activists have also demanded that the autumn elections be re-held. Georgia went to the polls on October 26, but the result has not been recognized by the EU Parliament or the opposition, which claims electoral fraud. According to the official result, Georgian Dream, which Kobachidze belongs to, received 89 of the parliament's 150 seats.
Georgia's President Salomé Zourabichvili is pro-Western and EU-friendly and has expressed support for the demonstrators.