A jury at the Central Criminal Court has heard that a man on trial for murder knew of the existence of an underground tank where a body was found.

Witness Jimmy Lowry was giving evidence in the trial of Patrick Quirke of Breanshamore, Co Tipperary who is accused of murdering Bobby Ryan, a part time DJ known as Mr Moonlight.

Mr Quirke has pleaded not guilty to the murder of Mr Ryan at an unknown location on a date between 3 June 2011 and 30 April 2013.

Bobby Ryan's body was discovered by Patrick Quirke on the Lowry's farm at Fawnagowan almost two years after he went missing.

Mr Quirke was leasing the farm at the time. He had also been having an affair with Mary Lowry which had ended. The prosecution alleges he killed Bobby Ryan because they were love rivals.

Mary Lowry's brother in law, Jimmy Lowry, told the court that the underground tank was used for run off or excess water from the milking parlour on his family farm.

He said he, his brother Johnny, his late brother Martin and Patrick Quirke knew about the existence of the tank. Johnny Lowry told the court the tank was built in the late 1970s.

Mr Lowry also said he was happy for his sister in law Mary Lowry when she started a new relationship with Bobby Ryan. Other siblings of Ms Lowry's late husband Martin also told the court they were happy about the relationship.

Mary Lowry's son Tommy said after his father died his uncle Pat Quirke leased the farm. At first he would go about his business on the farm but later came into their house a lot more and made himself at home.

Tommy Lowry said, "I did not feel Pat Quirke belonged inside my home but he was there." He said Mr Quirke frequently complained about his things going missing and he or his brother would be blamed.

He recalled going on holiday with Mr Quirke but said "I didn’t like spending time with him, I didn't like it one bit, that's just the way it was."

He said he was not aware of the underground tank on the farm but knew there was a concrete slab in the yard. He did not remember Pat Quirke ever spreading slurry on the farm and believed it was done by contractors.

Tommy Lowry also said he once heard his mother and Pat Quirke arguing and Mr Quirke had asked his mother about a missing ladder. His mother had asked where was her passport and Mr Quirke said he had sold it.

The jury has previously heard evidence from Mary Lowry that her passport went missing and how she alleged Pat Quirke had told her he had sold it.

Tommy Lowry said he was 14 when his mother began a relationship with Bobby Ryan. He said they got on very well and described Mr Ryan as a very funny man. He said they were all happy for his mother to be happy.

During cross examination he told defence counsel Bernard Condon that Bobby Ryan had helped to buy a "field car", an old Toyota Corolla which he and his brother would drive around the yard.

He also drove a tractor but his mother did not drive the tractor. He agreed he would be at school every day from Monday to Friday and therefore would not know or see every activity on the farm or by whom it was being carried out.

Local woman Claire O'Grady told the court that on the morning Bobby Ryan disappeared she saw a silver van parked at a gateway to a marshy area as she travelled to work from the Kilshane area.

She said it was very unusual to see any vehicle on that road and when she later heard there was a man missing she reported her sighting to the search teams. She later pointed out the area to gardaí.

The trial has previously heard that the deceased drove a silver van which was found at a nearby woods the day he went missing.

Earlier, Mary Ryan, the former wife of the deceased, told Mr Humphries that she split with Mr Ryan because they had grown apart. They were, she said, more like friends than husband and wife, they had different interests and the split was amicable. When she heard that he was seeing Mary Lowry she was happy for him and told him: "I hope eveything goes well for you."

Niall Quinn, a sub contractor at the quarry where Mr Ryan worked as a truck driver, described the deceased as punctual and a "perfect employee" who got on well with his colleagues and customers.

Before his disappearance he told Mr Humphries that Mr Ryan took the previous Friday off to travel to Bundoran. When he returned the following Monday, the witness felt Mr Ryan was in "good form".

When he failed to show up for work on Friday 3 June Mr Quinn went to the deceased's house looking for him. He didn't find him and decided to take over Mr Ryan's truck driving duties for the day.