South Korea captain Son, 30, scored Spurs' second goal four minutes after coming on as a substitute in the London derby at the Tottenham Hotspur Stadium.

"We have been made aware of the utterly reprehensible online racist abuse directed at Heung-min Son during today's match, which has been reported by the club," Tottenham said in a statement on Twitter.

"We stand with Sonny and once again call on the social media companies and authorities to take action."

In August, Chelsea banned a season ticket holder indefinitely after Son was racially abused during their 2-2 draw with Spurs at Stamford Bridge.

Anti-racism group Kick It Out called this month on social media companies to introduce "meaningful reforms" after Brentford striker Ivan Toney was subjected to racial abuse on Instagram.

Toney was targeted on Feb. 11 after his equaliser in Brentford's 1-1 draw with Arsenal was not ruled out by VAR for offside. 

The Football Association echoed the club's call for action.

"We strongly condemn the racist abuse aimed at Son Heung-min this evening," an FA spokesperson replied to Tottenham's tweet. 

"This has no place in our game and we fully support the authorities and social media companies to take the strongest possible action to tackle it."

In June 2022, a group of 12 men who had been arrested for racially abusing Son on Twitter were given community service punishments and wrote apologies to the Tottenham forward.

Tottenham club officials had complained of "abhorrent racist abuse" on social media after the 3-1 home defeat to Manchester United on April 11, 2021.

"Another match day and more abhorrent racial abuse suffered by one of our players," said a Spurs statement at the time.

"This has again been reported to the platforms and we shall now undertake a full review alongside the Premier League to determine the most effective action moving forward."

In August 2022, Chelsea banned a season ticket holder indefinitely for aiming racist abuse at Son during a 2-2 Premier League draw at Stamford Bridge.