A teenager has been rushed to hospital after being stabbed in Edgware.
The Metropolitan Police force was called to The Drive just before 11.40am on Thursday after reports of a stabbing.
Officers attended and found a 15-year-old boy.
He was taken to hospital and police are waiting for an update on his condition.
There have been no arrests at this time and enquiries are ongoing.
Police have sealed off the alleyway between The Drive and Edgwarebury Lane, with red police tape having been put up at both ends of the path.
An air ambulance was also seen landing around the Edgwarebury Park area.
Emergency services are still working at the scene.
Any witnesses or those with information that could help police should call 101 ref CAD 2412/30 Dec.
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