A woman pushing her baby in a pram was stabbed three times in the back by a man who creeped up behind her.
The horror attack left the 36-year-old mum with three knife wounds as she was taken to hospital, with what police are describing as non-life threatening injuries.
A manhunt has been launched to find the 'silent' thug who attacked the woman in front of her young child, who fortunately was uninjured.
The knifeman, who did not say anything throughout the frenzied attack, is said to have run off from the scene in the Streatham Hill area of south London, at around 5.20pm on Monday.
Met Police described the suspect, who did not speak as he stabbed the victim three times before running off, as a black man, around 6ft and wearing dark clothing.
A Scotland Yard spokesman said: "Detectives are appealing for witnesses after a mother was stabbed in an unprovoked attack in Streatham Hill while she was with her child.
"Officers were called at 5.23pm on Monday, December 30 to a report of a 36-year-old woman stabbed in Downton Avenue, Streatham Hill.
"The woman was taken to hospital. Her injuries have been assessed as not life-threatening or life-changing.
"The stabbing occurred as the victim was pushing her child in a pushchair. The child was not injured.
"She was attacked from behind by a lone suspect, described as a black man, around 6ft tall and wearing dark clothing.
"The man did not speak as he stabbed the victim three times before running off down Downton Avenue away from the High Road."
Detectives from South Area CID are investigating.
The spokesman added: "Extensive enquiries, including forensic work and CCTV analysis, are ongoing.
"At this stage, officers retain an open mind as to any motive.
"There have been no arrests and enquiries continue."
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