A man is in a critical condition after being attacked in the early hours of Saturday.
Police are appealing for witnesses and information about a suspect who ran from the scene after the assault at 2am in Streatham High Road near the junction with Ambleside Avenue.
The 42-year-old man was taken by ambulance to hospital where his condition is critical.
CID officers based at Walworth are investigating.
Investigating officer, DS Rob Merrett, said: “I want to hear from anyone who saw or heard anything suspicious, or who witnessed the assault.
“A lone suspect, believed to be a white man, ran from the scene north along the high road, and I want to hear from anyone who may have seen that man.”
There have been no arrests. Enquiries continue.
Witnesses are asked to call 101 quoting CAD 942/jul11. To remain anonymous, please contact the independent charity Crimestoppers.
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