The London club have also been banned for selling tickets to away supporters for a second European match, although the governing body say that will be “suspended for a probationary period of two years”.

As Biraghi received treatment for his head injury in the first half, a stadium announcement urged supporters to stop throwing objects onto the pitch and to “please respect players and the officials”.

West Ham will play in next season’s Europa League after ending their 43-year wait for a major trophy as Jarrod Bowen scored a last-minute winner.

The Premier League club condemned the behaviour of “a small number of fans” and said “these actions have no place in football”.

It followed trouble before the game, as 16 people were arrested after an incident at a bar.

Czech police said Italian fans attacked West Ham supporters in a bar, leaving three people injured.

Uefa’s investigations into what happened at the end of West Ham’s semi-final second leg at AZ Alkmaar are still ongoing.

The Dutch club said it was “a night to reflect on with shame” after a section of the stadium where away fans were sitting was attacked.

Several West Ham players confronted the group of fans that had targeted an area containing their friends and family.