The Greek government has suspended professional football in the country indefinitely.
The move follows violence at a match between rivals Olympiakos and Panathinaikos, as well as a brawl between club officials at a board meeting on Tuesday.
The Greek league has already been suspended twice this season due to violence.
Newly-elected ruling party Syriza have pledged to stamp out the problem.
The suspension affects the top three divisions in the country.
“What we have been informed is that the Super League and the Football League have been suspended indefinitely,” Super League president Giorgos Borovilos told reporters.
“We have a new government who are looking to bring this subject up for discussion and implement state laws related to it.”
Borovilos added: “The government wants games to start again as soon as possible, but for that they want to see immediate reactions from all of us.”
Fans hurled flares, rocks and bottles at officials during Panathinaikos’s 2-1 victory over Super League leaders Olympiakos on Sunday.
An executive meeting of Super League officials was then called off after a Panathinaikos official claimed he had been punched by Olympiakos security personnel.
The two Athens clubs are known as the ‘eternal enemies’ and share a fierce rivalry.
Matches in the professional divisions were previously halted in September and November last year.
The first suspension was caused by the death of a fan after clashes between supporters of third-division teams Ethnikos Piraeus and Irodotos.
The second sanction followed an assault on the assistant director of the refereeing committee.
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