Gardaí want to speak to a young man who presented himself to Clondalkin Garda station a short time later.
Gardaí have renewed their appeal for information on a serious assault in Clondalkin over the weekend.
Two men were attacked outside a house in the Grange View Way area at 10.15 pm on Saturday night.
One man in his 30s is in a critical condition at Tallaght Hospital.
According to the Irish Independent, medical staff have grave concerns over his condition.
He suffered horrific head injuries and lost several teeth.
Gardaí want to speak to a young man who presented himself to Clondalkin Garda station a short time later.
They're also asking anyone who was in the surrounding area at the time, and who may have dash cam footage, to come forward.

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