He said authorities had information they were planning to bring down the government to help Giorgadze return to Georgia.
Giorgadze, a former national security minister, is wanted in Georgia for allegedly plotting a 1995 assassination attempt against then President Eduard Shevardnadze.
Since President Mikheil Saakashvili came to power following Georgia's 2003 Rose Revolution, Giorgadze has repeatedly called for the president's resignation.
Giorgadze, who fled Georgia 10 years ago, said on Russian television today that the arrests of his supporters were aimed at intimidating Georgian voters ahead of upcoming local elections.
(Rustavi-2, civil.ge, Caucasus Press)
Human Rights In Georgia
Georgia's police have been accused of using excessive force (official site)
READ'CULTURE OF IMPUNITY':Georgian President Mikheil Saakashvili's government has had a checkered human rights record since it came to power after the 2003 Rose Revolution. The international community has welcomed the steps taken by the new Georgian leaders to refine the legal mechanisms needed to combat rights abuses. But it also blames the government for failing to ensure those mechanisms are properly implemented....(more)