Gang police are investigating a knife fight that spilled into the streets of Dalston on Monday night.
Officers were called to Templeton Close just before 10.30pm after reports of a shooting.
On arrival, armed police found two injured men, both in their 20s. One had been stabbed and the other shot with a pellet gun.
They were both taken to hospital as a priority by medics but are now said to be in stable condition.
Officers then found a 17-year-old boy lying in Stoke Newington Road after being slashed with a knife. Witnesses told of a heavy police presence as the teenager lay injured in the street.
He was also rushed to hospital in serious condition.
A boy was later arrested on suspicion of possessing an offensive weapon with the intent to endanger life and possession of class A drugs.
He has been bailed to a date in early December.
The Met’s gang squad Trident are investigating what happened.
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