Eight men have been arrested and released under investigation after an unnamed Tottenham player was racially abused on Twitter.
The eight were arrested "under suspicion of using words or behaviour or displaying written material with intent to stir up racial hatred", with a further four men interviewed under caution for the same offence.
Tottenham said they "welcomed the action" taken over the abuse, which occurred during the 3-1 defeat by Manchester United on 11 April.
"There is no place for racism anywhere in our game and society," Spurs added.
A Met statement read: "This action makes it abundantly clear that police will not stand for racist thuggery, even if it is committed online.