Two people have been arrested for allegedly blackmailing Spurs and South Korea captain Son Heung-min, police said on Thursday.

The accused are a woman in her 20s and a man in his 40s, a Korean National Police Agency officer said.

The two allegedly tried to extort money from the 32-year-old forward by falsely claiming that the woman was pregnant with his child, Yonhap news agency said.

The footballer's agency, Son & Football, said it filed a police complaint for blackmail and will pursue "strong legal action without leniency".

The two "threatened the player by saying they would spread false information", the agency alleged.

"We stress that Son Heung-min is unequivocally the victim in this case," it added.

Son recently vowed to "complete" his Tottenham career by leading the struggling Premier League team to Europa League glory in the final against Manchester United on May 21.

He has scored 173 goals in 451 appearances across 10 seasons in north London but come under pressure this year after a series of underwhelming displays. (AFP)