A Georgian opposition leader has been dragged from his party office by police and others have been physically attacked, after the prime minister vowed that organisers of a week of pro-EU protests, which he called "violent actions", would face justice.

Georgian Prime Minister Irakli Kobakhidze on Tuesday agreed to hold talks with two former ministers and an opposition party on the country's European course, after days of increasingly tense protests by opposition supporters.

Dozens are hospitalized after massive protests broke out across Georgia following the pro-Putin government's move halting decadeslong talks on joining the EU amid increasing ties with Russia.