The teenager was killed 17 years ago, with her body found less than 500 metres from her home
Gardaí have issued a renewed appeal for information about the murder of Raonaid Murray.
The call comes on the 17th anniversary of the brutal murder of the teenager.
17-year-old Raonaid left Scott's Pub in Dun Laoghaire to walk home at around 11.20pm on the night of September 3rd 1999.
Just over an hour later her body was found at nearby Silchester Crescent in Glenageary - less than 500 metres from her home.
Gardaí say they have recently spoken again with a number of Raonaid's close friends, adding that their assistance has been greatly appreciated.
They have called on anyone who knew the teenager well to contact them.
In particular they would like to speak to anyone who has any doubts about the alibis provided by others.
Detectives say anyone who has not come forward with relevant information may be unknowingly shielding a killer.
"The solving of this murder is of the utmost priority for An Garda Síochána and any information received will be treated with absolute confidentiality," officers say.
Anybody with information is being asked to contact the Garda Incident Room at Dun Laoghaire Garda Station on 01-666-5000 / 666-5012, the Garda Confidential line on 1800-666-111, or any Garda station.
A reward for critical information received is available from Crimestoppers, who can be contacted at 1800-25-00-25.