The Football Association will await the report of referee Andy D'Urso before deciding whether to take action against Tottenham after a missile-throwing incident yesterday.
A coin was thrown at assistant referee Alan Green during the 4-0 FA Cup quarter-final defeat at home to Chelsea.
It is the second time an object has been thrown in a match between Spurs and Chelsea. The other incident came when the sides met at Stamford Bridge in the Worthington Cup semi-final, first leg. It is also the third such incident at White Hart Lane this season.
Spurs fans were angered when Green ruled Eidur Gudjohnsen onside for Chelsea's second goal, and one of them is alleged to have thrown what is believed to be a 50p piece at the official. Spurs may now be fined by the FA.
Tottenham vice-chairman David Buchler said the club were already closing in on the culprit and promised to hand out a lifetime ban to whoever is caught and found guilty of throwing the object.
"We employed an extra 150 stewards for the game and used closed circuit television and we have already narrowed down to a few rows where this came from," said Buchler.
"We shall find the culprit, and he will be banned from this ground for life. We don't want a reputation as a club whose fans throw missiles on to the pitch".
PA