4.15pm: A teenager has been charged in connection with the murder of schoolgirl Anastasia Kriegel.
The body of the 14-year-old was discovered in a derelict farm building in Dublin last week.
She was reported missing just hours after she was last seen at St Catherine's Park close to her home on Monday, May 14.
Three days later her body was found on the Clonee road in Lucan - a postmortem revealed she was sexually assaulted and beaten to death.
Yesterday Gardaí arrested two teenage boys, this afternoon one has been charged in connection with the investigation and is due before the Children's Court at 6pm.
The second teenager has been released without charge. A file is being prepared for the DPP.
It has taken over a week from the time Ana's body was found to charge someone in connection with her murder.
Gardaí wanted to be sure they had all the necessary DNA evidence and supports in place.
The boys were questioned by specialist child interviewers and were also accompanied by their parents.
Update 10am: Two teenage boys have been arrested as part of the investigation into the murder of Anastasia Kriegel in Dublin.
The boys are being questioned by specialist child interviewers and are accompanied by their parents.
DNA testing was carried out, CCTV footage has been reviewed while students at Ana's school were asked to file out questionnaires from Gardaí.
Gardaí have also warned people in the area not to take matters into their own hands amid fears of vigilante attacks.
Ana Kriegel was last seen alive in St Catherine's Park - close to her home in Leixlip on Monday the 14th of May.
Her naked body was found at a derelict farm building on the Clonee road in Lucan three days later - a postmortem revealed she was sexually assaulted and beaten to death.
Earlier: Two teens arrested as part of Anastasia Kriegel murder investigation
Gardaí have confirmed that two juvenile males arrested yesterday as part of the investigation into the murder of Anastasia Kriegel remain in custody.
They are being held at two separate Dublin Garda Stations.
The 14-year-old was found murdered at a disused house on the Clonee Road in the Lucan are of Dublin last week.
Gardaí are continuing their investigation into her death, studying DNA evidence and CCTV footage from the area.
Ana, as she was also known, was last seen at St Catherine's Park at 5.30pm last Monday, close to the disused house where her body was found.
Anyone with information, or who can assist with the investigation, is asked to contact Lucan garda station on 01-666-7300, the Garda Confidential Telephone Line at 1800-666-111 or any garda station.