Chelsea's English Premier League 2-nil win at Tottenham was marred by alleged racist behaviour from the crowd.
Referee Anthony Taylor stopped play in the second half after an object was thrown on to the pitch and he was approached by Blues defender Antonio Rudiger.
An address made over the public address system then warned "racist behaviour is interfering with the game".
Second and third announcements followed with the game heading towards its end.
The Professional Game Match Officials Limited (PGMOL) and Tottenham have confirmed that the game was stopped over a single incident of alleged racist behaviour.
Uefa's three-step protocol says that a game can be abandoned if fans have been warned twice before.
A statement issued by Tottenham read: "We are now conducting a thorough investigation, which will include liaising with Chelsea and their players for their observations.
Any form of racism is completely unacceptable and will not be tolerated in our stadium.
[Source: BBC]
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