Police have named a 20-year-old man who was stabbed to death “while on the way to an Arsenal match”.
Tashan Daniel died at Hillingdon tube station on Tuesday afternoon after being attacked by two men on the platform.
A source told the BBC Mr Daniel was an Arsenal fan and was heading to the Emirates Stadium, in Holloway, to see his team play Nottingham Forest in the third round of the Carabao Cup.
Officers from the British Transport Police were called to the station shortly before 4pm.
Members of the London Ambulance Service and the air ambulance attended the scene and found Mr Daniel with a serious injury consistent with being stabbed.
He was declared dead at the scene inside a train carriage and his family have been informed.
Det Ch Insp Sam Blackburn confirmed two suspects had left the station and a knife had been found near the station.
He said no arrests had been made.
READ MORE YAHOO NEWS:
Det Ch Insp Blackburn said: "Tashan did not deserve to lose his life during this senseless attack.
"His family are completely broken by this news and we are doing everything we can to offer them support."
Mr Daniel had been waiting for a Piccadilly Line train when he was stabbed.
Detective Superintendent Gary Richardson, from British Transport Police, described the killing as “a shocking act of violence”.
He added: “While we are at the early stages of our investigation, we believe a group of young men were involved in an altercation on the platform before one of the men received a fatal stab wound.
“We are doing all we can to find those responsible, and I would urge any witnesses or anyone who was in the area at the time and saw anything suspicious to contact us as soon as possible.
“This level of violence is not usual on the rail network, and we will be increasing our uniformed patrols in the Hillingdon area in the coming days to help reassure the travelling public.”
Anyone with information can contact BTP by texting 61016 or calling 0800 40 50 40 quoting reference 382 of 24/09/19.
Alternatively, you can call Crimestoppers anonymously on 0800 555 111.