A received text message reading: "Must get fit for murder" was found on Elaine O’Hara’s laptop, the Graham Dwyer trial has heard today.
The 20th day of the murder trial also heard that the number sending the message was attributed to a person called ‘Graham’ elsewhere on her computer.
Mr Dwyer (aged 42) is charged with murdering Ms O’Hara at Killakee, Rathfarnham on August 22, 2012, hours after she was discharged from a mental health hospital.
The Cork-born father-of-three of Kerrymount Close, Foxrock, Dublin has pleaded not guilty to murdering the 36-year-old childcare worker on that date.
The jury in the Central Criminal Court trial spent this morning hearing evidence from computer crime experts, who examined the Apple Mac with which Ms O’Hara appeared to have synced an iPhone.
Detective Sergeant Alan Brown testified that he used PhotoRec software to extract 14 files containing hundreds of SMS messages from a forensic copy of the laptop’s hard drive.
The sergeant, who is also a forensics lecturer, explained that this software can even retrieve deleted files, whether the user had deleted them or they had been automatically deleted by successive back-ups.
The jury was then shown screen shots of the work he carried out to change information into a ‘human, readable format’.
The screen shots included two text messages from a number, 083 1103474.
“Good, looking forward to getting new bike tomorrow to try and lose weight,” read the second message. “Must get fit for the murder.”
D Sgt Brown explained that the date appearing on screen was the number of seconds from January 1, 1970.
“So that’s probably 2011 or 2012,” he said.
However, the jury was told that it would be supplied with the exact date and the content of all the text messages later in the trial.
The jury earlier heard from Detective Garda Bríd Wallace of the Computer Crime Unit, who had carried out the first step of the extraction process.
She said that, as part of her examination of the hard drive’s forensic copy, she had identified at 083 number in Ms O’Hara’s calendar.
The jury was shown a screen shot of the calendar from June 30, 2011.
It read: “Graham’s phone number 083 1103474.”
The trial has heard that Ms O’Hara was last seen in Shanganagh, South Dublin on the evening of August 22.
Her skeletal remains were discovered at Killakee on Friday, September 13, 2013. A cause of death could not be determined.
The trial continues before Mr Justice Tony Hunt and a jury of five women and seven men.