British Transport Police officers are appealing for information after reports that a woman was racially abused on the Tube.
The incident happened at around 6.50pm on Friday 28 March on board a Northern line train heading towards London Bridge Station.
"Two men allegedly racially abused a woman, who confronted the pair after they pushed into her on the train," said PC Keith Jarrett.
"The incident continued as the woman traveled up the escalator towards the booking hall at London Bridge Station.
"I'd urge anyone who was on board the service at the time and witnessed what happened to contact police.
"I'd also like to speak to the woman who was subjected to the racial abuse."
A 23-year-old man from Croydon and a 28-year-old man from Bermondsey, have both been arrested on suspicion of committing a racially aggravated public order offence.
They were both released on police bail until Monday 14 April pending further inquiries.
Anyone with information is asked to contact British Transport Police on 0800 40 50 40, or text 61016, quoting TSub/B5 of 07/04/14. Information can also be passed to the independent charity Crimestoppers, anonymously, on 0800 555 111.