A man has been arrested on suspicion of attempted murder after a 19-year-old was stabbed in Brixton.
Police and paramedics were called to Loughborough Road shortly before 7pm on Saturday, to reports of a stabbing.
They found a 19-year-old man who was seriously injured.
He was treated at the scene by police and paramedics before being taken to hospital, where his condition has been assessed as life-threatening.
"A man was arrested on suspicion of perverting the course of justice in relation to a bicycle being taken from the scene," said a Scotland Yard spokesperson on Sunday.
"He has been further arrested on suspicion of attempted murder."
Detectives from the Met's Central South CID are leading the investigation. They are appealing for anyone with information or any witnesses yet to speak with police to contact them via 101 or @MetCC on X quoting CAD 5813/9dec.
To remain 100% anonymous call the independent charity Crimestoppers on 0800 555 111 or visit the crimestoppers-uk.org website.