Detectives investigating the murder of a woman in Edmonton have today, Wednesday, 4 June, arrested a second woman.
The 47-year-old woman [B] was arrested on suspicion of murder and remains in custody at a north London police station.
Detectives continue to appeal for information and witnesses.
Police were called to Grove Street at the junction with Fore Street, N18, at 00:20hrs on Sunday, 1 June to reports of a stabbing.
Police and London Ambulance Service (LAS) attended the scene.
A 20-year-old woman was found with a stab wound. She was taken by LAS to an east London hospital in a critical condition. She died in hospital a short while later.
Enquiries continue to locate and inform next of kin. Formal identification awaits.
A post-mortem examination held at Haringey Mortuary on Tuesday, 3 June gave cause of death as a single stab wound to the stomach.
Detectives from the Homicide & Major Crime Command are investigating.
A 38-year-woman [A] was arrested on suspicion of murder on Sunday, 1 June. She has been bailed pending further enquiries.
Anyone who witnessed the incident or has information that may assist the investigation is urged to call the incident room on 020 8345 3865. To remain anonymous, call Crimestoppers on 0800 555 111.