The teenager was taken to Beaumont Hospital.
Gardaí have launched an investigation after a teenager was hospitalised following an assault that occurred at Killester Dart Station on 30 October 2018 at 10pm.
One man in his late teens was stabbed in the chest. He was taken away from the scene to Beaumount Hospital.
His injuries are not believed to be life-threatening.
It appears that the victim and suspected offender were known to one another.
A man in his late teens was arrested at the scene and is currently being detained at Raheny Garda Station under Section 4 of the Criminal Justice Act, 1984.
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