A young man has been arrested following the serious assault of a teenager in Co Longford in the early hours of Saturday morning.
The assault occurred on Main Street, Ballymahon at about 3:20am.
He is currently detained under Section 4 of the Criminal Justice Act, 1984, at Longford Garda station.
The victim suffered serious head injuries and was removed by ambulance to Mullingar Hospital for treatment, where he remains in critical condition.
Gardaí are appealing for anyone who was in the area between 2:00am and 4:00am on November 13th, to come forward.
They are also appealing to anyone with camera footage (including dash cam) to make it available to them.
Anyone with information is asked to contact Longford Garda Station 043 335 0570, the Garda Confidential Line 1800 666 111 or any Garda Station.
A Garda spokesman said investigations are ongoing.