The man was shot in East Road on Monday (credit: Google Maps)
Officers were called to East Road at 11.59am on Monday, 22 January where the 25-year-old man was found with a gunshot injury.
The victim was taken to hospital where he remains in a life-threatening condition.
His family have been informed.
Police are now appealing for anyone with information to come forward.
Detective Inspector Mat Freeman, who is working on the investigation, said: “We know that when this happened there were members of public and vehicles driving nearby at the time.
“Did you capture anything on your phone, or on your dash cam if you were driving?
“Any piece of information, no matter how irrelevant it may seem, could be crucial in piecing together what happened.”
Anyone who can help the investigation is asked to call 101 quoting CAD 7905/22Jan.
To remain anonymous, contact the independent charity Crimestoppers on 0800 555 111.
Tags: Newham, Met Police, Shooting, Plaistow, Stratford
