Emergency services were called to Hulse Avenue (Credit: Google Maps)
The boy was attacked in Hulse Avenue at around 3.45pm today.
He was taken to hospital for treatment. His condition is not known at this time.
No arrests have been made and officers are investigating the attack.
Longbridge Road is closed in both directions between Fanshawe Avenue and Upney Lane.
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Tags: Barking, Barking and Dagenham, Stabbing