Police investigating the death of German backpacker Inga Maria Hauser have been granted another 14 hours to question a man on suspicion of her murder.
He was released on bail pending further enquiries until Tuesday 5 February.
Ms Hauser, 18, went missing after she arrived in Larne on a ferry from Stranraer in Scotland on 6 April 1988, and her body was found two weeks later.
She was discovered in a remote part of Ballypatrick Forest, near Ballycastle, County Antrim.
Police renewed their appeal for information in April of last year - the 30th anniversary of the murder.
On 1 May they said they had received the results of further DNA testing.