A 48-year-old man has been arrested over an attack on a 96-year-old woman who was punched during a burglary.
Greta Lily was taken to hospital after the attack in her home in Ardarvan, Buncrana, Co Donegal, shortly after midnight last Saturday.
A man was detained in Burt, Co Donegal, on Tuesday evening.
He was taken for questioning at Buncrana Garda Station under section four of the Criminal Justice Act.
Ms Lily had been saving to put new windows in her home before being burgled, and several thousand euro was stolen.
A fund has been set up in the local credit union to support the injured pensioner.