Police are investigating claims that West Ham supporters threw coins at Frank Lampard following his 200th goal for Chelsea at the weekend.
In a statement, West Ham said:
"West Ham United will be working with Chelsea to investigate the reports of missile throwing during Sunday's game at Stamford Bridge.
Any individual found to have acted in an inappropriate way will have to face the consequences of their actions, including the possibility of a ban from attending future matches."
More top news
Labour’s Marshsa de Cordova hopes her experience will lead to more people disabilities being elected as MPs.
Passengers were evacuated from Tower Hill at lunchtime as flames appeared inside one of the carriages.
A parent who drove at a teacher because he wouldn't allow access to the school car park, carrying him on his bonnet, has been jailed.