A man in his 50s who was arrested on Sunday on suspicion of murdering missing Kerry farmer Michael Gaine has been released without charge.
The man was questioned by detectives for the maximum period of 24 hours when he was released from custody at Killarney Garda Station last night.
His detention had been extended by a garda superintendent at the end of six hours of questioning and by a chief superintendent after 12 hours.
Gardaí said that Mr Gaine's family has been informed and are being supported by a garda family liaison officer. The family has requested privacy at this time.
They added that search operations, supported by local, regional, and national Garda units, other emergency services and the Defence Forces, are ongoing at Carrig East in Kenmare.
Mr Gaine, also known as Mike, has been missing from his farm in Kenmare since 20 March.
Initially, his disappearance was treated by gardaí as a missing person's case.
That changed just over a fortnight ago when gardaí said they were satisfied Mr Gaine was dead and that they had re-classified his disappearance as a homicide investigation.
Gardaí questioned the man about his relationship with the 56-year-old and it is also understood that he was known to Mr Gaine.
The discovery of materials while slurry was being spread on Friday evening led to Mr Gaine's farmyard, 8km from Kenmare, being designated a crime scene.
A huge examination and search of the farmyard and surrounding fields re-commenced, after the area was designated a crime scene.
The material found was confirmed to be human tissue, and more human tissue was recovered during the search.
There were sombre scenes as the material was removed in a hearse on Sunday evening for tests and the working assumption is that this material is the partial human remains of Mr Gaine.
Around 20 members of the Defence Forces joined gardaí on Mr Gaine's farm, with personnel combing fields searching grassland, vegetation and undergrowth where the slurry was spread.
An industrial unit for clearing drains was also brought to the farm.
Gardaí have renewed their appeal for information and said the investigation team can be contacted at Killarney Garda Station on 064 667 1160, the Garda Confidential Line at 1800 666 111, or speak with any member of An Garda Síochána.
