Self-styled anarchists carried out a string of arson attacks in Athens and Piraeus on Saturday, targeting police and businesses and causing widespread damage but no injuries. A group of around 100 youths attacked a riot police unit stationed near the offices of the main opposition party PASOK in the central Athens district of Exarchia early on Saturday, hurling petrol bombs and stones and damaging parked cars. At around the same time, 20 youths destroyed three buses parked at a bus depot in the Athens suburb of Aghios Dimitrios. Later on Saturday, at around 4.30 p.m., a homemade explosive device made with gas canisters detonated, damaging the entrance to the offices of a polling firm on central Patission Street. A similar bomb damaged the entrance to the Piraeus Chamber of Arts and Crafts when it went off about half an hour earlier. A device planted outside another polling firm in the Athens district of Ambelokipi at 1.30 p.m. failed to go off when a resident saw a candle burning next to two gas canisters and extinguished it.