A 47-year-old woman and an 18-year-old girl were found injured in The Nursery at 3pm yesterday (July 6).
Officers and London Ambulance Service crews attended and they were taken to hospital.
The woman sustained life-changing injuries to her abdomen, and the girl also remains in hospital.
Her condition is unknown at this stage.
Two girls were arrested in connection with the incident.
Both were arrested on suspicion of attempted murder while the other was further arrested on suspicion of possession of Class A drugs and robbery.
They remain in custody.
Anyone with information is urged to call the police on 101, quoting crime reference 4512/06JUL.
Alternatively, an anonymous report can be filed via Crimestoppers on 0800 555 111.
This is breaking news story. More to follow.
