AEK Athens have been banned from European competitions for the next two years by governing body UEFA.
The ban is as a result of fan trouble ahead of their 2-0 loss against Ajax in the Champions League on November 27, when a section of their supporters threw a petrol bomb at the opposing fans.
The Greek club have also been slapped with a £70,000 fine and will play the next two UEFA competition matches behind closed doors.
The club apologized in a statement released on Friday morning promising to take action against its own supporters involved in the chaos.
“Our team apologized publicly and immediately recognized its part of responsibility about what happened and insulted mostly the name and the important European history of AEK FC,” the club said.
“The most important thing for all of us it to realize and think about that this decision does not mean the end of this escapade, but the beginning of an extremely difficult road of complete compliance with the actual meaning of this decision, along with the need of taking drastic action in order to avoid finding ourselves at this position ever again, because in that case there will be no return."
AEK were knocked of the Champions League after losing all their six games in the group stages.