AFC Wimbledon fans defecated and urinated on the floor of toilets at stadium:mk during Sunday’s match against MK Dons.
The away supporters also tore urinals from the walls, ripped seats in the stand and plastered stickers – which included the words ‘MK Scum’ – around the away end.
Bosses at MK Dons, who won the FA Cup second round match 2-1 thanks to Jon Otsemobor’s injury time winner, admitted that a small minority of away fans had caused some damage, but downplayed the incident.
Instead, a spokesman praised the ‘thousands of football fans who behaved impeccably’.
But one Dons insider revealed the full extent of the damage, telling the Citizen that urinals had been ripped from the walls and the floor used as a toilet.
He added that refreshment facilities and seats were also damaged.
That damage took place in both the mens and ladies toilets in the away end.
And another witness, who saw the damage in the ladies toilets and in the stand, told the Citizen: “They’ve damaged and ripped seats, stuck stickers on seats all over the concourse, smashed some toilets and graffitied on the walls.
“It was the ladies toilets in the away end, every toilet is ruined. They were designated for male use at the game.”
It is believed AFC Wimbledon will be liable for any damage caused by their fans at stadium:mk during the game.
Three supporters of the London club were also arrested and hit with fixed penalty notices for offences before and after the game against their archrivals.
It was the first time the two clubs had met, with tension running high throughout the day.
Both sets of fans were guilty of invading the pitch when their team scored; AFC fans after Jack Midson had equalised in the second half and the home support following Otsemobor’s stoppage time winner.
Thames Valley Police said the three arrests came despite the ‘vast majority’ of fans being very well behaved and supportive of their policing operation.
Two AFC Wimbledon fans were arrested away from stadium:mk after the game. A further AFC fan had been arrested before the match.
All three arrests related to minor public order offences and the supporters were all given fixed penalty notices and fined.
The Citizen asked both Wimbledon Independent Supporters Association (WISA) and AFC Wimbledon to comment on the damage caused.
AFC said the reports were just ‘rumours’, while WISA chairman Simon Wheeler preferred to concentrate on this newspaper’s coverage in the run up to the game, rather than the behaviour of AFC fans.
An AFC Wimbledon spokesman said: “Thank you for your email in which you refer to rumours of Wimbledon fans’ misbehaviour. We do not comment on rumours but we point you to our fans’ excellent reputation for good behaviour which is supported by the recently published Home Office statistics - only one Wimbledon fan was arrested in the 2011-12 season.”
In a statement which he asked be included in its entirety or not at all, Mr Wheeler said: “Slightly surprised to receive an email from the MK Citizen, as for the last three weeks your publication has failed to be in touch with WISA on numerous issues including inaccurate and provocative statements by Pete Winkelman and the football club in Milton Keynes.
“It has been well documented that I was not at the game on Sunday and therefore I am not in a position to comment on any alleged incidents. The only incident I was aware of was a Milton Keynes supporter threatening Neil Sullivan, as reported by ITV.
“I suggest you talk to AFC Wimbledon and Thames Valley Police on this issue.”
No Milton Keynes Dons fans have been arrested or charged following the match.
Milton Keynes Citizen has approached the FA to ask if it will be taking any action regarding the pitch invasions by both sets of supporters.
Both sets of supporters sported banners during the game.
AFC carried flags which included the wording, ‘The Real Dons Are Here’ and ‘Stop Thief’ next to a picture of Dons chairman Mr Winkelman. A fly-past by a plane dragging a banner reading ‘We Are Wimbledon’ was paid for by an AFC fan.
Meanwhile, MK Dons fans unfurled a large banner stating: ‘We’re keeping the Dons... Get over it’.
Talking about the damage caused, an MK Dons spokesman said: “Unfortunately a small minority of away fans caused some damage to the supporters’ seating, toilet and refreshment facilities in the North Stand at stadium:mk. While we are extremely disappointed with the damage caused, it should not deflect from the thousands of football fans who behaved impeccably and enjoyed the newest rivalry in football in good spirit.”
She added the two clubs were liaising over cost of repairs and how they will be paid.