Two teenagers were rushed to hospital after being found suffering from stab wounds in separate locations.
The first boy was found stabbed in the stomach at Tesco Express in Lea Bridge Road, Leyton last night.
Minutes later, paramedics came across a second boy suffering a stab wound to the leg outside Whipps Cross Hospital in Leytonstone.
Their injuries are not life threatening and both of them were subsequently arrested on suspicion of grievous bodily harm.
Officers believe the stabbings may be linked.
A spokesman for the Metropolitan Police said: “Police were called shortly before 20.43pm on Sunday December 17 to a supermarket on Lea Bridge Road in Leyton to reports of a man stabbed.
“Officers attended along with London Ambulance Services.
“A man believed to be in his teens was found suffering a stab wound to the stomach.
“He was taken to an east London hospital and his injuries are not deemed to be life-threatening.
“Around seven minutes later London Ambulance Service came across a second male in his teens suffering a stab wound to his leg outside Whipps Cross Hospital. His injuries are not life threatening.
"Both were subsequently arrested on suspicion of GBH and remain in hospital."
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