He was arrested on Tuesday eveningafter the investigation into Miriam Burns’ death was declared a murder inquiry.
A man in his 50s who was arrested in connection with the murder of Miriam Burns in Kerry has been released without charge.
Local gardai believe the grandmother was fatally attacked in her home near Killarney some time between last Friday and this Monday.
The man in his 50s who was arrested in connection with this killing has been released without charge pending further investigation.
He was arrested on Tuesday evening, shortly after the investigation into Miriam Burns’ death was declared a murder inquiry.
Gardai are understood to have searched an area around an old holy well near Killarney in connection with the investigation.
Ms. Burns, who was 75, has been remembered as a ‘smiling’ and ‘stylish’ lady who often cycled to and from her engagements around the town.
She’s described as a 'devoted' family woman in her death notice, who is ‘devastatingly missed’.
The grandmother will be laid to rest at St Mary’s Cathedral on Sunday afternoon at 2.15pm

Two People Killed In Separate Overnight Road Crashes
Gardaí Travel to Jordan After Arrest in Jamey Carney Case
“You Don't Use A Sledgehammer To Crack A Walnut": Kildare Solicitor Criticises New Legal Aid Scheme As Work Stoppage Continues In Dublin
Nine Critical Infrastructure Projects Designated By Government
Two Arrested Following Interception Of Car Bomb In Monaghan
Nationwide Hosepipe Ban In Place From Today
Nine Infrastructure Projects To Be Fast-Tracked Under New Proposed Legislation
Fuel At The Pump Could Reach €2.30/L If Middle East Conflict Continues