UEFA has opened disciplinary cases against Celtic and Linfield after disorder at a Champions League qualifying match, including against a Celtic forward who was the target of bottle-throwing by home fans in Belfast.
One of the charges is against Celtic striker Leigh Griffiths for "provoking spectators" after the match.
Griffiths had been shown a yellow card for time-wasting in the second half of the game.
As reported by Sky Sports, those actions have resulted in Linfield being charged by European football's governing body, not only for supporters throwing objects but also for fans invading the pitch.
Of course, there is a bitter rivalry between both supporters from Celtic and Linfield stemming from a difference in beliefs and traditions. In addition to Griffiths, Jozo Simunovic, Tom Rogic, Scott Brown and Stuart Armstrong were also booked by referee Alejandro Hernandez. Media reports said Griffiths tied a Celtic scarf around the Windsor Park goalpost and made a 5-1 gesture - a reference to the predominantly Catholic side's win over Glasgow rivals Rangers, a Protestant club with close ties to Linfield.
In adddition, Brendan Rodgers' side have been hit with a further charge of improper conduct for having had five players booked in the fixture.