West Ham co-chairmen David Sullivan and David Gold have warned supporters they face "serious consequences" if they cause trouble at Saturday's derby against Millwall.
The last meeting between the sides at Upton Park, in the Carling Cup in August 2009, was overshadowed by crowd trouble inside and outside the stadium which resulted in 64 arrests.
In an open letter on the club's official website, Sullivan and Gold said: "We would like to remind any supporter who gains access to the stadium with the intention of doing anything but enjoying the game will face serious consequences and will be dealt with in accordance with our match day policies in conjunction with the Metropolitan Police."




 





