Police were called at 2.26pm on Friday, 5 April, to a report of an altercation at a residential address in Fernwood Avenue SW16.
Officers attended the address where a man, aged in his 50s, was found unresponsive. He was taken to hospital in a critical condition.
A 38-year-old man was arrested at the scene. He has been bailed pending further enquiries.
Police were informed on Saturday, 6 April, that the man taken to hospital had died. Officers believe they know his identity but enquiries are ongoing to identify and locate next of kin.
An urgent police investigation is underway. A crime scene remains in place.
DCI Laura Nelson, Specialist Crime, said: “I know that local people will be shocked and upset by this incident. I share their concerns and assure them that my colleagues and I are doing all we can to establish what led to this tragic death.
“At this early stage, I must retain an open mind. A post-mortem examination will be held in due course, and this, along with other lines of enquiry will help to establish exactly what happened.”
Anyone with information who has yet to speak with police is asked to call 101 and quote reference 3838/05apr.
