The PSNI has renewed an appeal for information about the murder of a teenage German tourist in Co Antrim 20 years ago.
The body of 18-year-old Inga Maria Hauser was found in a remote part of Ballypatrick Forest near Ballycastle in April 1988.
She had just arrived on holiday in Northern Ireland from Scotland.
The case remains open and detectives have now narrowed down the search for the murderer to a small group of people who had detailed knowledge of the area.
The officer in charge of the murder investigation, Detective Superintendent Raymond Murray, said a significant line of inquiry was now directed at people who had a particular knowledge of the part of the forest where the girl's body was discovered.
At the same time it was revealed hundreds of local people have voluntarily supplied DNA samples for testing - after police said the data obtained would be confined to the specific investigation.
Mr Murray said the PSNI would publish a photograph and a map of the precise location where her body was found.
The area where the teenager's body was discovered is in the most western corner of Ballypatrick Forest, approximately 4km from the Glenmakeeran Road and well off the main scenic drive through the forest which is used by the general public.
The PSNI has obtained advice from both behavioural and geographical profilers who agreed that the person responsible for the murder was likely to have been familiar with the specific location.
The location was known to have been used at the time by people who rented forestry plots - also working in the area were Forestry Service employees and sub-contract labourers.
