A 41-year-old man has gone on trial in the Central Criminal Court for the murder of his wife.
Bus driver, John O'Brien with an address in Ballinakill Downs in Waterford denies murdering 35-year-old Meg Walsh on a date between 1 October and 15 October 2006.
The Court was told he found her kissing another man, the night before she disappeared.
Meg Walsh's body was found in the River Suir on 15 October 2006. She had been missing for a fortnight. She'd suffered injuries to her head, shoulders and right arm.
On the night before she disappeared, the court was told, Ms Walsh and her husband, John O'Brien had been out in a local hotel, with another man.
The three of them went back to Mr O'Brien and Ms Walsh's home and continued drinking until the early hours of the morning of 1 October.
The Court heard Mr O'Brien found his wife and the other man kissing in an upstairs bedroom and told him to get out of the house.
John O'Brien told gardaí his wife left the house at 8.30pm that evening and had not turned up for work the following day.
He said he had not reported her missing because she had gone out before and stayed in a hotel before coming back the following day.
Meg Walsh's silver car was found in a pub car park in Waterford city centre on 4 October.
Blood matching that of Ms Walsh was found in the car and in the boot.
CCTV footage showed the car being left in the car park but the person who left it was not identifiable.
Senior counsel Denis Vaughan Buckley told the jury there will be evidence presented that only two keys had been provided for Ms Walsh's car.
He said Mr O'Brien gave gardaí what he said was the spare key but there will be evidence that it was the main key.
A second key was also found in the house.
The jury of seven men and five women was told this case will be substantially, although not totally, based on circumstantial evidence.
Mr Vaughan Buckley said after they had heard all the evidence the prosecution case was that the jury would be satisfied that Mr O'Brien was guilty of murder.
The case is expected to last three weeks.
