Rioting youths clashed with police on the streets of Greece's second-largest city overnight.

In video filmed early this morning (December 7) in Thessaloniki, hooded youths throw firebombs and Molotov cocktails, set off flares and throw projectiles at riot police, who used tear gas and stun grenades.

The clashes took place on the ninth anniversary of the fatal police shooting of 15-year-old Alexis Grigoropoulos.

The teenager's death led to some of the worst riots for decades.

War zone at multiple fronts on Wednesday night in Thessaloniki Greece, as enraged youth mobs bring chaos on anniversary of 2008 police shooting of teenager. Firebombs, flares, stones and every object found available was used as weapon against police which fired teargas and stun grenades at youths. Extreme violent clashes marked ninth anniversary of the killing of a 15 years old teenager Alexandros Grigoropoulos by police in an incident that sparked the worst riots for decades in a country with a history of street violence.