Officers are sifting through hours of footage

The team said it was closing in on the Cardiff City fans responsible for missile throwing during the game and a final whistle pitch invasion after the Bluebirds 2-1 win.

A team of 10 detectives have been sifting through more than 100 hours of footage from closed-circuit cameras and police camera operators inside and outside of the ground, as well as still photographs.

Heading the inquiry, detective chief inspector Graham Lloyd said his probe is also focusing on the Bluebirds' match at Bristol City a week before their famous victory against the top-flight Premier League leaders.

'Wales's image'

Bristol fans reported Cardiff supporters caused trouble at that game too.

Police have said they would be making applications to remand suspects in custody and apply for stringent bail conditions including a ban on suspects attending football matches home and away while they await trial.

Meanwhile, a joint investigation is under way the Football Association and their Welsh counterparts, the FAW, into the crowd disturbances.

Hammam gestures to the crowd during a pitch walk

There has been widespread condemnation of the Cardiff City fans' behaviour throughout the clash against Premier Division club Leeds.

On Tuesday, Welsh First Minister Rhodri Morgan told assembly members the violence which marred the joy in the capital on Sunday had damaged the image of Wales.

He told AMs in the debating chamber in Cardiff Bay there are many lessons to be learned, but he commended Cardiff owner Sam Hammam, who branded bottle-throwers "the enemy" in a statement.

Mr Hammam - himself severely criticised for his "pitch walkabout" - has announced that he is to stop what has become a custom for the Cardiff City owner.

On Sunday he watched the final few minutes of the game from behind the Leeds goal.

"Even though it is within my right to do it, even though it has never caused a problem - including the Leeds game - I have decided to stop," he told BBC Radio Five Live.

"We need to preserve the good name of football."