Dave Whelan, chairman of Wigan, who won the FA Cup semi-final against Millwall 2-0, said he could not understand Millwall fans fighting each other.
I can't understand why the Millwall fans would fight each other.
I understand if they want to fall out with the visiting team, but why would they fall out amongst themselves? It just gives football a very, very poor reputation.
We know Millwall are a tough club, their team's tough to play, the supporters are Millwall Millwall Millwall ... straight through. But don't fight each other. I couldn't understand that.
The Wigan chairman was speaking to BBC Radio 5 Live.
More top news
Accompanied by the Duke of Edinburgh, the Queen will attend the opening ceremony of the fifth session in the Holyrood chamber.
Ms Leadsom has received the backing of Ian Duncan Smith, the former work and pensions secretary.
The former shadow work and pensions secretary is considered a more viable candidate than Angela Eagle, a Labour source has told ITV News.