Police were called to concerns for a man’s welfare at a home on Palmerston Road, just off Kilburn High Road, around 3.15 today (September 1).
Officers and London Ambulance Service medics arrived, who treated a man in his 30s for stab wounds.
Police believe that the wounds are self-inflicted.
He remains in hospital with injuries described as serious, but not life-threatening or changing.
Police remain at the scene.
Pictures from the incident show a man standing out of a third floor window, as police speak to him inside the building.
A Met Police spokesperson said: “On Monday, 1 September at 15:16hrs police were called following concerns for the welfare of a man at a residential property on Palmerston Road, NW6.
“Met officers and the London Ambulance Service attended the scene, where a man in his 30s was treated for stab wounds.
“At this stage, it’s believed that his injuries are self-inflicted.
“The man has been taken to hospital where he remains with serious injuries which are not believed to be life-threatening or life-changing.
“A scene remains in place.”
The London Ambulance Service and London Fire Brigade have been contacted for comment.
