Two teenage boys have pleaded not guilty to the murder of schoolgirl Anastasia Kriegel and a jury has been sworn in for the trial.
The boys, who were 13 at the time, are alleged to have killed the 14-year-old, who was known as Ana, in Co Dublin, last May.
The teenagers, who are now 14, both said they were "not guilty" when the charge was put to them before the Central Criminal Court yesterday.
One of the boys also denied a charge of aggravated sexual assault.
A parent sat in the dock with each boy when the charges were read out.
Boy A, who sat with his father, stood up in the dock and identified himself as the accused person.
When the charges were put to him by the court clerk, he replied "not guilty" both to murder and to aggravated sexual assault.
Boy B also stood, identified himself as the accused, and when asked by the court clerk, he too told the court he was "not guilty" of murder.
The two accused cannot be identified because they are minors.
The trial is expected to hear from more than 130 witnesses, the majority of whom are members of An Garda Siochana. It is expected to last around six weeks.
The boys are charged with the murder of 14-year-old Anastasia Kriegel at Glenwood House, Laraghcon, Clonee Road, Lucan, last May 14.
Her naked body was found at the disused farmhouse three days after she was reported missing.
Yesterday afternoon, before Mr Justice Paul McDermott, a jury of eight men and four women was sworn in to hear the trial.
When they were being selected, Judge McDermott told the potential jurors that the offences before the court were "very serious" and that the nature of the evidence could cause upset.
He told them the details may be "very upsetting".
The judge said the fact that the events involved young people could make it more disturbing than other cases, and further informed potential jurors that the teenagers were entitled as children to anonymity, both now and into the future.
He said it was an offence, punishable by a fine or imprisonment, for them to disseminate or disclose the teenagers' identities or any details relating to the case which may identify them.
The jury was told that the court will sit between 10.45am and 4.15pm each day, with lunch between 1pm and 2pm and two 15-minute breaks in the morning and afternoon.
This was because the trial involved young people, the judge said.
The evidence and details would also require a "concentration of effort" on their part, Mr Justice McDermott added.
The trial is expected to get under way this morning, with prosecutor Brendan Grehan giving his opening address to the jury.