Police announced the arrest of an unnamed leader of the self-described “anarchist collective” Rouvikonas on Saturday.
The 53-year-old self-styled anarchist was arrested late on Friday after the group raided a law office that also serves as a debt collection agency on behalf of a bank.
The anarchists smashed equipment at the law firm’s offices, on a street across from the Greek Parliament building.
Meanwhile, another leader of the same group, Giorgos Kalaitzidis, threatened judges not to reject a furlough request by convicted terrorist Dimitris Koufodinas who went on hunger strike after he was initially denied.
A court council in Volos, central Greece, is expected to decide this week on the request for prison leave.
“The three Volos judges will make a decision that will directly affect Dimitris’ life, ours and theirs,” Kalaitzidis said in a Facebook post, warning that “everything will turn red” if the request is rejected again.
In recent years, Rouvikonas has claimed responsibility for dozens of attacks on state offices, foreign embassies and private businesses.