Police are appealing for witnesses to come forward after a man in his thirties was stabbed to death in Southwark Park.
Police were called just before 2pm on Wednesday.
Officers, London Air Ambulance and London Ambulance Service attended and found a man aged in his thirties suffering from stab injuries.
Despite the efforts of emergency services, the man died at the scene.
His next of kin have now been informed.
A crime scene remains in place.
No arrests have been made.
The Homicide and Major Crime Command is now leading the investigation. The attack occurred at lunchtime and police are urging witnesses and anyone who has information or footage to get in touch.
Anyone with information concerning this fatal stabbing is urged to call police on 101 quoting CAD 3632/31OCT or Crimestoppers anonymously via 0800 555 111.