Row over hidden knife led to fatal stabbing, jury told
'bully': Accused says that he was living in fear
The jury in the case of a former Mountjoy prisoner on trial for a murder at the jail has been shown the heavily bloodstained pocket-knife used in the killing.
The knife, with a four-and-a-half-inch blade, was recovered from a ground floor wing of Mountjoy following the fatal stabbing of Derek Glennon in June 2007.
Declan O'Reilly, from Parnell Road in Crumlin, has pleaded not guilty to murdering the 24-year-old inmate, and is standing trial at the Central Criminal Court.
Deputy State Pathologist Dr Michael Curtis told the court the cause of Mr Glennon's death was two stab wounds to the chest, one which penetrated his heart to a depth of up to 9.5cm, and another which penetrated his lung.
Detective Sergeant Robert O'Reilly told the jury that when he asked Declan O'Reilly where he had got the knife, he replied it had been thrown over the wall of the jail for Mr Glennon, who had then forced O'Reilly to hide it on his behalf.
During his interviews with O'Reilly (31), the detective said he was told Mr Glennon had been bullying him for months, and he was terrified to leave his cell because of it.
He said he was being forced to hide drugs and mobile phones for Mr Glennon and, two weeks before the attack, he was told to hide a knife for him.
O'Reilly said he would get a 'dig' nearly every day. Mr Glennon threatened to have his brother shot, and would call him a weasel and a junkie.
On the evening of June 25 2007, O'Reilly went to Mr Glennon's cell to ask him to take back the knife. He said Mr Glennon became angry and said: "Get the f*** away from me. I'm going to cut your throat, you little rat."
O'Reilly said he thought Mr Glennon was going to slash him, because he had witnessed him stabbing an inmate in the jaw.
He decided "then and there" to stab him, he said, and pulling the knife from his waistband, stabbed him in the stomach.
Mr Glennon and two other prisoners began punching him, and he kept swiping the knife in front of him. He said he had no memory of stabbing him in the chest.
"He wouldn't leave me alone" O'Reilly said. "I didn't want to stab him... I've never had a fight in jail in my life."
During cross-examination by defence lawyer Paul McDermott, Detective O'Reilly described Mr Glennon as an "extremely aggressive" man and agreed that Mr Glennon was a man to be feared.
The jury is due to hear closing speeches when the trial resumes today.