UEFA have opened an investigation into the behaviour of PSV fans following their 1-0 defeat to Arsenal in the Europa League on Thursday night.
The Dutch supporters ripped out seats and threw flares toward the home end inside the Emirates Stadium.
Granit Xhaka scored the only goal of the match in the 71st minute.
The win, which is Arsenal’s fourth in the competition, means they have already secured a top-two finish in the group.
Mikel Arteta’s men can now confirm top spot with another three points in Eindhoven next week.
Footage captured by those inside the stadium showed one fan throwing a flare towards the home sections, fortunately missing the departing Arsenal fans.
Several were also seen ripping out seats, with riot police forced to intervene and UEFA launching an investigation.