More details have emerged about a stabbing in Pinner on Monday, November 29.
A woman in her 40s was taken to hospital after suffering a stab injury on Bridge Street at 1.35am. Her condition was assessed as not life-threatening.
A teenager who had previously been arrested on suspicion of grievous bodily harm has been released.
A spokesperson for Metropolitan Police said: “Police were called by London Ambulance Service at 1.31 am on Monday, November 29 to reports of a person suffering from a stab injury at a residential property in Bridge Street, Pinner.
“Enquiries into the circumstances of the incident established that the injuries had been caused accidentally.
“A teenage boy who was arrested on suspicion of grievous bodily harm has been released without charge.”