Youths armed with petrol bombs attacked a police station in the northern Greek city of Thessalonika as anger over the killing of a teenager in Athens refused to die down. One officer was hurt in the attack, and riot police responded with tear gas.
Police say 15-year old Alexandros Grigoropoulos was hit by a ricochet when warning shots were fired in Athens on Saturday. But witnesses say the officer took deliberate aim.
The riots are the worst Greece has seen for years, erupting across the country from Thessalonika in the north to the island of Crete in the far south.