tweeted: "I have a great relationship with the West Ham United supporters, from my first spell at the club and again now I am back on loan here. This why I was very disappointed to hear some of the songs yesterday and it was embarrassing …

" But we need to remember that it was made by a minority group of fans and I'm sure the fa together with west ham United football club will do everything to find and punish them."

The Football Association is being assisted by Spurs and West Ham in its investigation into Sunday's events but the matter could become a criminal one following the intervention of the Met. A Met spokesman said: "We can confirm that a complaint has been received, but we are yetto speak formally with the complainant."

There were also chants by West Ham fans mocking the attacks on Tottenham supporters by Italian supporters in Rome last week prior to the north London club's Europa League match against Lazio. One Tottenham fan, Ashley Mills, was stabbed in the head and leg.

A statement on West Ham's website read: "West Ham United will take the strongest possible action against any of their supporters, including enforcing life bans from the club, that are found guilty of behaviour which is categorically not condoned by West Ham United.

"During the 46 games in the Championship last season, West Ham United had zero arrests for racism or violence, so while we are surprised to see such reports today, we will examine any available evidence of such conduct