(CNN)A league game between Greek football giants Panathinaikos and Olympiakos had to be abandoned after 70 minutes on Sunday as fans clashed with both players and police.
Fan violence, firebombs and teargas force Greek derby to be abandoned
Olympiakos, the visiting team at Panathinaikos' Olympic Stadium, was leading the Athens derby 1-0 when German referee Marco Fritz was forced to bring an end to proceedings.
The match was initially stopped for eight minutes within just six minutes of the game kicking off, with a group of home team supporters -- some of whom were masked -- invading the outside of the pitch and attacking the Olympiakos substitutes and those in the team's dugout.
The referee added 13 minutes of first-half stoppage-time to make up for the lengthy incident.
The game's only goal -- scored in the 53rd minute by Spanish striker Miguel Angel Guerrero -- sparked further violence, this time outside the stadium, with fans releasing firebombs.