A 40-year-old man has been arrested on suspicion of murder following a triple stabbing incident in South London.
A 28-year-old woman has been killed, a 46-year-old woman is in a critical condition in hospital and a 17-year-old girl is in a serious but stable condition.
Investigating Officer DI Will Reynolds said police believe all three of the victims are known to the man in custody and the incident was not random.
Our investigation is at a very early stage, however we are confident that there are no outstanding suspects. We believe that all three victims were known to the man who is currently in our custody, there is no suggestion that the victims were selected at random.