European football's governing body UEFA could take action after claims that racist chants were made at Thursday night's match between Tottenham and Lazio at White Hart Lane.
Three Spurs players were apparently targeted by some of the Italian club's supporters.
It has also emerged that a Chelsea player has also been racially abused. Chelsea manager Roberto Di Matteo and Arsenal manager Arsene Wenger have said racism in football must stop.
More top news
London mayor Sadiq Khan is "extremely worried" about knife crime as Met Police revealed there was an increase in stabbings in the capital.
Camden police have responded to reports of an unexploded World War Two bomb in Hampstead high Street.
AFC Wimbledon face Plymouth in the League Two play-off final at Wembley, with a place in League One at stake.