Two people who were being questioned by police investigating the murder of Lisa Dorrian in Co Down have been released on bail pending further inquiries.
The 49-year-old man and 34-year-old woman were arrested on Friday in the Newtownards area.
Lisa Dorrian, 25, was last seen alive at Ballyhalbert Caravan Park on the Co Down coast on 28 February, 2005.
Earlier this week, police commenced a new large-scale search operation at an airfield beside the caravan park.
Officers said they were using new information and new techniques to comb the area.
The search site is 2.5km long and contains a number of underground tunnels and buildings. Police say it was not previously possible to search properly.
Detectives spent nine months reviewing previous investigations.
They also reviewed maps of the airfield from 1945 and are using new technology and methods to search the terrain.
