A teenage boy was left with a stab wound to his chest after two gangs of males clashed in Primrose Hill.
Police were called to reports of a group of males being chased by another group near Primrose Hill Road around 9.45pm on Saturday.
Upon arrival, officers found a 15-year-old boy with a stab wound to his chest.
He was rushed to hospital by paramedics with injuries which were not life-threatening.
A 17-year-old boy was also treated at the scene by paramedics for an injury to his head. He did not require hospital treatment.
Primrose Hill was searched by Met Police officers and Royal Parks officers with no trace of suspects found.
No arrests were made and enquiries continue.
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