A man who died from stab wounds in Clapton Saturday night, 4 May, has been formally identified as James Sweeney by murder inquiry detectives.
Sweeney, 30, was a shop worker who lived at Lea View House on Jessam Avenue in Clapton and was originally from Montserrat.
Police officers and London ambulance attended to him at around 9 pm and he was pronounced dead at the scene. Detectives say a few hours earlier there had been an argument between Sweeney and three other men.
A post-mortem examination at Poplar mortuary Sunday 6 May gave the cause of death as stab wounds to the chest and abdomen.
An incident room has opened under Detective Chief Inspector Neale Baldock from the Homicide and Serious Crime Command.
Three men were arrested on suspicion of murder.
One of the men, 29, attended Royal London Hospital suffering from stab wounds. He was subsequently arrested on suspicion of murder; after being discharged from hospital he was taken to an east London police station where he remains.
Another man arrested, 45, has now been bailed to return on 10 June pending further inquiries.
A third man, 21, arrested in the Clapton area, was taken to a north London police station. He was later released on police bail to return on 24 June pending further inquiries.
Detectives investigating the case are appealing for witnesses who were in Jessam Avenue from 15.00 to 21.00 on Saturday and have been asked to call the incident room on 020 8345 1570 or call Crimestoppers anonymously on 0800 555 111.