Scunthorpe United football club has said a Cobblers fan was ejected from the ground after attacking a steward during a dispute about sitting down during the game.
A spokesman for the club has said Northampton fans had complained during the first half about supporters in the away end not sitting down.
After initially complying with the request, the club claims the same happened in the second half and led to the disruption.
The club spokesman said: “In the second half, when requested again, the supporters wouldn’t sit down and two males became abusive and were asked to leave, one walked out with the steward and left the ground, a second refused and because of his aggressiveness I told my staff to move back for things to settle.
“A lady who said she was the chair of the supporters club, then said she would ask the male to leave.
“Prior to this, as the second steward came down, he was attacked by a male at the front of the seats. Three other stewards assisted and the male was ejected and arrested by the police.
“The steward received minor injuries and bruising. The second male did leave. At this time another group at the back of the stand started jumping up and down and then we became aware that they had broken a seat and it was thrown down the stand into their own supporters but did not hit anyone.
“Seven seats were damaged overall. At no time did any person make a complaint of assault against the stewards.”
Northampton fans took to social media after the game and made a number of criticisms about stewarding at the ground.
Northampton Town spokesman Gareth Willsher previously said: “From our position in the ground, which was close to the other goal, we could clearly see an incident had taken place but could not tell why or how it had started.
“We will await the report from Scunthorpe United and the police before commenting and will work with the authorities on this matter.
“Such incidents are very rare and it is unusual for Cobblers supporters to be involved so we are keen to understand what happened.
“Our fans have a proud reputation and we need to understand fully how this incident occurred.”