Update: Four youths have now been arrested.
A 15-year old boy died in hospital on Sunday night after being stabbed in the chest and thigh while allegedly trying to protect his younger brother.
Police were called to the scene in Westminster Road, Edmonton and the boy was taken to hospital but later died. No arrests have yet been made but detectives have launched a murder investigation.
Some reports are calling it a 'gang-related attack' and say that police are seeking 'a number of attackers' but the Met have not yet confirmed this.
