The Olympiacos game in Volos, for the 13th day of the Greek Super League, was marked by riots.
Fans of the Reds clashed with the police at the Panthessaliko Stadium, with police making extensive use of chemicals.
The reason was the cancellation of a goal by the Reds in the last minutes of the Volos - Olympiacos game and while the game was tied 2-2.
In fact, the riots then extended outside the stadium.