A man has been arrested on suspicion of murder and two counts of attempted murder after the death of Mohammed Hassan in Battersea.
Police were called to Shepard House in the Winstanley Estate on August 3 to reports of a stabbing.
Mr Hassan, known to his friends as Bashir, died at the scene a short while after the London Ambulance Service arrived.
Two other men were stabbed in the incident and both have since been discharged from hospital.
A 26-year-old man was arrested on August 12 on suspicion of murder and two attempted murders.
Met Police continue to investigate.
Anyone with information to call the incident room on 020 8721 4205. To remain anonymous, call Crimestoppers on 0800 555 111.
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