Mobile phone records show there were 18 communications between murder accused Joe O'Reilly and the woman with whom he was an affair on the day his wife was murdered.
Det Gda Joanne O'Sullivan told prosecuting counsel, Mr Dominc McGinn BL, that she created a spreadsheet showing all incoming and outgoing calls and text messages that went through Mr O'Reilly's phone for Monday 4th October 2004, the day his wife was found beaten to death in their home.
Det Gda O'Sullivan was giving evidence on the 12th day of the Central Criminal Court trial of Mr O'Reilly (35) of Lambay View, Baldarragh, Naul, Co Dublin who has pleaded not guilty to murdering his wife and mother of their two children, Rachel O'Reilly, (30) at the family home on October 4th 2004.
In total, the list shows that 18 calls or texts took place between Mr O'Reilly's phone and that of Ms Nikki Pelley, with whom he was having an affair.
The first call between the two came at 05:45 with a 27 minute call from Nikki Pelley's landline.
A number of further telephone calls between both number lasted almost one hour between 5.45am and 08:46 that morning.
Earlier, phone analysis placed the mobile of a co-worker of Joe O'Reilly's in the vicinity of the Broadstone bus garage consistent with the account he gave gardaí of his movements on the morning of the murder of Rachel O'Reilly.
Communications expert Mr Oliver Farrell, who works with the engineering consultancy Vilicom, took to the stand today to give evidence of the analysis of Derek Quearney's mobile phone.
Mr Quearney worked with Mr O'Reilly in the outdoor advertising company Viacom, based in the Bluebell Industrial Estate.
The court has already heard how Mr O'Reilly told gardai he was inspecting posters in the Broadstone bus garage with Mr Quearney on the morning of the murder.
Mr Farrell told prosecution counsel Mr Dominic McGinn BL, that he received Mr Quearney's mobile phone records from 02 and analysed them to show phone traffic on his mobile for the morning of the murder.
He said the first call at 07:30:53 routed through Nangor Road mast, close to Riverview Business Park and encompassing the Park West area, means the mobile phone analysis is in keeping with Mr Quearney meeting Mr O'Reilly in this area.
Analysis of Mr O'Reilly's phone showed his mobile was routed through the same transmitter 'within five minutes' of Mr Quearney's phone.
He then analysed 7 calls between 8.37 to 9.00am. The first three are routed through the Killeen Road, ESB mast which covers the Bluebell Industrial Estate and are therefore consistent with him being at work in Viacom.
The following four calls are picked up by a mast in the Chapelizod area, north of Blubell. He said this means this also corresponds with Mr Quearney being in work in Bluebell Industrial Estate and then travelling towards the Broadstone Bus Garage.
He said the next call at 09:25:07 is picked up by a mast in Dominick Street in the North inner city and that it covers the Broadstone bus garage. A further three calls are routed through masts at North King St. and the Bridewell.
While the next call at 10:59:45 is picked up by a mast on Harcourt St in the south inner city, he explained it could still be possible for the phone to be in the vicinity of the Broadstone bus garage, as the Harcourt St mast is very high and has an extended area of coverage.
And he said the following four calls up until 11:45:45 are consistent with Mr Quearney making the return journey from the Broadstone garage towards the Bluebell Industrial estate.
Mr McGinn then asked him to compare analysis of both phones in relation to the Broadstone bus garage. He said the first time Mr O'Reilly's phone was routed through a mast near Broadstone is 10:38:27 and that Mr Quearney's phone is first used in that area is over an hour earlier at 09:25.
Under cross-examination by defence counsel Mr Patrick Gageby SC, Mr Farrell agreed his analysis was reliant on the accuracy of the information given to him.
Mr Farrell insisted it would be possible for the mast in Harcourt St to pick up the signal from Mr Quearney's phone in the Broadstone bus garage. However, he agreed it is possible for masts to have a broader area of coverage area than they do in theory.
He also explained that when the nearest mobile phone transmitter is too busy or has a weakened signal due to an obstacle, the signal from the handset will be re-routed through the next strongest signal it can find.
When asked by Mr McGinn whether it would be possible for a signal from a phone in Murpy's Quarry to be re-routed through a transmitter in the Murphy's Quarry mast, he said: "no it would not."
A number of garda witnesses, including Deputy Commissioner Martin Callinan, then gave evidence of the various necessary procedures they were required to carry out in order to obtain the phone records from 02 Ireland .