Arrests over Millwall v Wigan FA Cup disorder
Four men have been arrested in connection with violence among Millwall fans during their side's FA Cup semi-final match with Wigan.
The men - aged 22, 27, 21 and 34 - were arrested after officers watched the footage from the game, which took place at Wembley Stadium on 13 April.
The force has also released 17 images of people they want to talk to in connection with the match.
So far, 27 people have been arrested and three have been charged.
The game, which saw Wigan win 2-0, was marred by Millwall supporters attacking police and fighting among themselves inside and outside the stadium.
Previously, the force had released images of ten people it wanted to speak to.
Det Ch Insp Andy Barnes, the senior investigating officer, said nine of the ten had been identified.
He said: "The investigation team is working through many more calls and CCTV to identify all those involved in the disorder. We expect to make further arrests."