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.

Department Of Housing Shifts Blame On To Council As Kildare Families Priced Out Of "Affordable" Housing Again
Outbreak Of Bird Flu Has Been Confirmed In Carlow Turkey Flock
Lidl To Open Country’s First Net Zero Energy Store In Maynooth This Thursday
Contract For Maynooth Eastern Ring Road Project Awarded To Company Based In Kilcullen
Policy Shift Allows Private Sector To Construct Wastewater Plants For New Housing
Parents Invited To Take Part In Major Survey On Primary Education’s Future
New "Affordable" Naas Homes Cost More Than Families Are Allowed To Borrow From Council
Minister Lawless Sought Legal Advice Over Claims Apprentice Electricians Bought Exam Papers For €50