A man has died shortly after being stabbed in Plumstead on Saturday night.
Police were called just after 8.30pm to a south-east London hospital after the victim was driven there by a friend.
The victim was suffering a stab wound to the neck and despite the efforts of medical staff the 23-year-old man died from his injuries later that evening.
Police believe the victim was attacked in the Plumstead area, possibly near the railway station and was able to call a friend who was able to then drive him to hospital.
He was able to call the friend who collected him in his car and took him to hospital.
The victim’s next of kin has been informed.
A post-mortem has not yet taken place.
Detective Chief Inspector Richard Leonard, of the Homicide and Major Crime Command, who is leading the murder investigation said: “This investigation is in its very early stages and we are still piecing together exactly where and how the victim was attacked.
“Were you in the Plumstead area last night? Did you witness a commotion or altercation, or see anything that seemed unusual, like a person or group of people running in the area? Any fragment of information is useful to our investigation and I would urge you to call police immediately.”
Anyone with information is asked to contact 0208 721 4805, or call police on 101 quoting ref 7434/29 March.
Alternatively information can be given anonymously to Crimestoppers via 0800 555 111.
There have been no arrests.