Officers were called by the London Ambulance Service at 6.05pm on Monday, 9 December to a residential address in Shelley House, Boyton Road N8, following reports of a fight and a man having been stabbed.
A 47-year-old man was found suffering from a stab injury. He was pronounced dead at the scene.
Officers have informed next of kin. Formal identification and a post-mortem examination will take place in due course.
Two men – aged 48, and aged 54 – have been arrested on suspicion of murder and taken into custody.
Detectives from the Specialist Crime Command have been informed.
Enquiries into the circumstances continue. A crime scene is in place.
Anyone who has information, images or video that could assist police with their investigation is asked to call 101 ref CAD 6129/9 Dec.