Police were called at 4.41pm on Sunday, 25 April to reports of an assault on Norwood Road, SE27.
Officers and the London Ambulance Service attended. Two girls, aged 16 and 17, were found suffering from stab injuries.
They were taken by LAS to a south London hospital; the younger victim’s condition has now been assessed as serious but stable. The second victim’s injuries do not appear to be life-threatening.
Their families are aware. The victims are known to each other.
Officers remain in the area and a crime scene is in place.
Four boys, all aged between 16 and 17, have been arrested on suspicion of attempted murder and are in police custody.
Detective Sergeant Rob Merrett, Central South Command Unit, said: “This is a shocking incident involving two young female victims, one of whom remains seriously ill in hospital. It has understandably caused considerable alarm in the community.
“Officers responded immediately when the 999 call was received. Two boys were quickly apprehended near the scene, and urgent enquiries led to two other males being arrested later on at addresses in Lambeth.
“All four are now in custody and my team are conducting a thorough investigation to establish what has led to this unacceptable violence. I urge anyone who has information, pictures and video that could assist us to make contact immediately.
It is imperative that we work with the community to fully establish what has happened here and bring any offenders to justice.”
Anyone with information is asked to call police via 101 quoting reference Cad 4970/25Apr. To remain anonymous, contact Crimestoppers on 0800 555 111.
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