The man who was stabbed to death during a fight at Middlesex University has been named as Noor Hassan Barre.
The 22-year-old was stabbed in the chest during a late night altercation at the university in Hendon, north-west London, on Friday (31 October).
Barre, of north London and who was not a student at the university, was taken by London Ambulance Service to hospital in a critical condition but died a short time later.
A post-mortem examination held at Northwick Park Hospital gave the cause of death as stab wounds to the chest.
Four people have been arrested on suspicion of murder; a 21-year-old woman, two 20-year old men and a 21-year-old man.
All four remain in custody at this time while inquiries continue.
Anyone who witnessed the incident or has information that could assist the investigation should contact the incident room on 020 8785 8244 or call Crimestoppers anonymously on 0800 555 111.