'Iron bar or poker' used to murder farmer Paddy (90)
Investigators believe that either an iron bar or a poker was used to murder 90-year-old Waterford man Paddy Lyons.
A suspect was last night being questioned in relation to the death, with a decision due on whether he will be charged or released or if a file will be sent to the DPP.
Mr Lyons (90) was struck repeatedly in the head and face with a heavy blunt object.
He was found lying slumped in a chair in the kitchen of his home last Saturday, his face covered in blood.
The revelation comes as garda sources admitted "significant work" now faces forensic officers examining the isolated home of the bachelor farmer at Ballysaggart, west Waterford.
The condition of both the inside and outside of the house is understood to be decrepit.
Half-a-dozen members of garda search teams were at the scene yesterday afternoon.
Another house in Tipperary was also being searched by detectives.
Gardai arrived at the house on the outskirts of Clonmel late on Monday night, with extensive searches carried out by forensic teams throughout yesterday.
The operation also involved the grounds and surrounding areas of the property, with the house sealed-off for a technical examination.
It is believed that between six and 10 people were in Mr Lyons' farmhouse home in the 48 hours before his death.
A garda source indicated that a substantial amount of forensic material ranging from fingerprints to DNA samples and clothing fibres had been recovered from the property.
A number of items are also being examined to determine if they may have been used as a weapon.
However, detectives suspect the murder weapon may have been removed from the property. Gardai are also examining CCTV footage.
This was taken from business properties in Lismore, Cappoquin and Ballyduff in a bid to determine the movements of specific individuals.
Detectives are trying to determine if items including small quantities of money were missing from the property.
It is understood the majority of Mr Lyon's money was moved to a bank account after a previous robbery in 2011.