Galway man strangled brother to death because he thought he was "afflicted by paedophilia"

Declan Ó Cualain has pleaded not guilty by reason of insanity

A murder trial has heard that a man admitted strangling his brother to death because he was convinced he’d been "afflicted by paedophilia".

Declan Ó Cualain of Cuileán in Carraroe, Co. Galway has pleaded not guilty, by reason of insanity in the Dublin Central Criminal Court.

Adrian Folan’s body was found in July 2014 under some rocks in a shallow pool of water at a quarry near the Cliffs of Moher.

Following his arrest, his brother Declan admitted strangling him to death with a cord while they were parked up listening to some music at the cliffs.

Today, his trial heard he had a history of mental health issues and had altered his approach to his medication in the lead up to the killing.

He had become fixated by paedophilia and got it into his head that Adrian was afflicted with this difficulty. The prosecution is satisfied this wasn't true.

Our courts correspondent Frank Greaney reports: