Everton are investigating possible incidents of racial abuse towards Heung-Min Son.
The South Korean star was involved in the incident that caused Everton player Andre Gomes to suffer a serious ankle injury.
Son was distraught after the incident, while he was shown a red card for his reckless challenge.
There are suggestions some in the crowd racially abused Son after the incident, as he walked off the pitch.
An official statement from Everton read: "Everton is investigating an alleged incident of racist behaviour by a supporter attending today's fixture against Tottenham.
"Everton strongly condemns any form of racism. Any such behaviour has no place within our stadium, our club, our community or our game."
The game between Everton and Tottenham finished 1-1.