Officers were called at 20:37hrs on Thursday, 29 March to a south-east London hospital after a male was presented suffering from a stab wound to his neck. He had been conveyed to hospital by a friend.
Despite the extensive efforts of medical staff the male died from his injuries later that evening.
At this early stage it is believed that the victim was attacked in the Plumstead area, possibly near the railway station.
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.
We await formal identification. A post-mortem will be scheduled in due course.
A crime scene was put in place at the hospital while officers examined the vehicle used to transport the victim.
There have been no arrests.
Detective Chief Inspector Richard Leonard, of the Homicide and Major Crime Command, who is leading the 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.