Eredivisie side AZ Alkmaar has issued 43 stadium bans to ultras in the wake of the violence that marred the Dutch side's Europa Conference League semi-final against West Ham.
Dutch hooligans clad in black hoodies tried to storm up the stairs at the AFAS Stadium and break into the away hospitality seats where the West Ham players' families and friends had watched the 1-0 win on the night.
A small handful of travelling supporters bravely fought off the flood of ultras at the top of the stairwell, forcing the onslaught back down the stairs.