Celtic face UEFA disciplinary proceedings over the behaviour of fans at their Europa League victory over AIK in Sweden.
Charges against the Scottish champions relate to setting off fireworks and throwing objects, the European governing body announced.
A number of flares were lit in the away section ahead of Celtic's 4-1 victory in Stockholm last week.
Footage showed police hitting supporters with batons and forcing them back towards a fence at half-time with cups of liquid being thrown towards the clashes.
Celtic later claimed that a number of fans of Hammarby, AIK's rivals, had entered the away end.
The case will be dealt with by the UEFA Control, Ethics and Disciplinary Body on September 19.