Tottenham have called for tough action against fans who were shown on a video clip chanting a "vile" anti-Semitic song.
The video, filmed by a passenger on the London Underground, appears to show West Ham supporters chanting anti-Semitic songs before Sunday's 2-2 draw at White Hart Lane. The latest clip shows a group of fans standing in the Tube chanting "I've got foreskin, how about you? F******Jew."
West Ham have said any fan behaving inappropriately faces a possible life ban. The latest incident comes days after a racist incident involving Chelsea football fans on a Paris Metro train.
A Spurs spokesman said: "Anti-Semitism in any form is wholly unacceptable and we support all efforts to kick it out of the game."