Garda investigations are continuing into three separate attacks on older people in their homes.
An appeal for witnesses has been launched after two elderly people were threatened at knife point in Cork city shortly after 7.30 yesterday morning.
The intruder left the scene with a sum of cash, while the man in his 70s and woman in her 80s were treated at the scene for non-life threatening injuries.
Similar aggravated burglaries have taken place in counties Kildare and Sligo in the past month.
Agriculture Minister Charlie McConalogue says local communities must be vigilant: