An elderly man and his daughter have been beaten with a hammer during a robbery.
A man and a woman entered the 80-year-old's home in Artane, Dublin, at around 12.30pm on Friday where they demanded cash and assaulted him with the weapon.
The victim's daughter then arrived at the house and was also assaulted.
Gardai investigating the incident arrested a 31-year-old man during a follow-up search.
He was being held at Coolock Garda station under section four of the Criminal Justice Act 1984.
The elderly man and his daughter were taken to Beaumont Hospital by ambulance where they were treated for their injuries.
Gardai have appealed for witnesses.