Police in Northern Ireland said today they are following a "positive line of inquiry" in their investigation into the murder of a German backpacker in north Antrim almost 17 years ago.
The body of Inga Maria Hauser was discovered in a shallow grave at Ballypatrick Forest outside Ballycastle, Co Antrim, on April 21st, 1988. Her neck had been broken.
Police have DNA of the person they believe may have murdered her, and more than 300 people have been tested so far in an effort to find the killer.
Police now believe that the German backpacker may have been held against her will for up to 10 days before her death. The 18-year-old had last been seen alive on the Stranraer-to-Larne ferry on April 6th, 1988.
She had decided to make a short hour trip to have a look at Northern Ireland while visiting Britain and police believe she could have met her killer on the ferry over.
Hundreds of people on the ferry - including soldiers and lorry drivers - were questioned as part of a huge investigation.
Ms Hauser's diary was recovered where her body was discovered by a passing forestry worker. Her rucksack was also found there, and five years ago police carried out new forensic tests on these items.