Barking and Dagenham The Old Bill said the man suffered “serious stab injuries” after he was knifed looming Rusholme Avenue.
Police said they had closed off sections of the territory due to the “serious assault”.
An air ambulance was called to the scene in east London.
It identifications a week of bloodshed for London, with similar incidents already this week in Kensington, Bermondsey, Brixton and Croydon.
The Met utter: “Police are currently on scene in the area of Rusholme Avenue, Dagenham with London Ambulance and London Air Ambulance at the argument of a serious assault, where a male has sustained serious stab outrages.
“Please avoid the area whilst police cordons are in place. Updates when we should prefer to them.”
This is a breaking news story, more to follow…