A 27-year-old man is fighting for his life following an overnight assault at a house on the Ennis Road in Limerick.
The victim who is from County Clare is understood to have suffered serious head injuries in an incident at an apartment at Knockhill on the Ennis Road.
Gardai were alerted to the incident a number of hours later and after initially being brought to the University Hospital Limerick, the 27-year-old victim was transfered to Cork Universtiy Hospital where his condition remains critical.
A 24-year-old woman was arrested on Wednesday as part of the investigation and has been taken into Garda custody for questioning in connection with the serious assault.
Anyone with information is asked to contact Mayorstone Garda Station on 06 456980.