Three men were arrested by police in dawn raids on Tuesday in connection to violence that broke out at the FA Cup semi-final between Millwall and Wigan.
Officers from Operation Arrowtip, which targets football-related crime, swooped on addresses in London and arrested three men
aged 21, 22 and 27, the Metropolitan Police force said.
A global audience had watched on stunned 10 days ago as fighting broke out in the Millwall section of supporters at the city's Wembley stadium.
A number of people, mostly Millwall fans, were arrested at the time but police have continued operations to root out the main troublemakers.
It took the number of arrests since the semi-final violence, in which Millwall fans attacked police and fought amongst themselves both inside and outside the ground, up to 23.
Millwall lost the semi-final 2-0.