The man who died after a double stabbing in Elephant and Castle Underground station has been named as 24-year-old Norman Bertran-Tavarez.
He succumbed to his injuries in hospital on Monday morning (September 2).
The News understands he was originally from the Dominican Republic and was living in Camberwell.
The other victim, a 25-year-old, is now said to be in a stable condition.
Two 20-year-old men, both from Southwark, have been arrested on suspicion of violent disorder and released on bail.
Detectives are still appealing for witnesses to come forward as their hunt for the killer, or killers, continues.
Detective Chief Inspector Sam Blackburn said: “This was a shocking act of violence and we are working tirelessly to identify and trace those responsible.
“While the investigation is still at an early stage, at this time we believe there was an altercation between two groups of men inside the Underground station and it is here the victims sustained their injuries before making their way onto the street.
“My team are painstakingly reviewing any CCTV evidence, to understand exactly who is responsible for this senseless killing.
“We continue to have a number of reassurance patrols in the area so passengers can expect to see an increased police presence on their journey.
“We continue to have a number of reassurance patrols in the area so passengers can expect to see an increased police presence on their journey.”
Anyone with information should call British Transport Police on 0800 40 50 40.
Or, call Crimestoppers on 0800 555 111 to remain anonymous.