Gardai are appealing for witnesses to an attack in Athy, Co Kildare last night.
A 37-year-old man was seriously injured in the assault on Duke St at around 8:30pm.
He is being treated at Beaumont Hospital after being transferred there from Naas.
A 30-year-old man was arrested close to the scene.
He is being held at Newbridge Garda Station.
Anyone with information is being asked to contact Athy Garda Station on 059-863-4210, the Garda Confidential Line on 1800-666-111, or any Garda station.