Tottenham will provide video footage to the Football Association in a bid to help identify any fans guilty of racist chanting during Sunday's FA Cup quarter-final against League One Millwall.
Millwall supporters were heard chanting "DVD" and "You're selling three for a fiver" at Spurs' South Korean striker Son Heung-min, thought to be in reference to the racist stereotype of traders selling bootleg copies of films.
Press Association Sport understands the FA has begun investigating the allegations of racist chanting. The governing body will seek evidence from referee Martin Atkinson's match report, as well as observations from the clubs and police.
A Tottenham club spokesman said: "We strongly condemn the use of any racist language.
"We shall be passing on all of our footage to the relevant authorities which can assist with the identification of anyone responsible for such chanting at yesterday's game."
"The club is assisting The FA with their investigation and will make no further comment until that process is complete."