Man (49) and woman (34) remain under arrest in connection with the murder of Lisa Dorrian
Two people were still being questioned last night in connection with the murder of Bangor woman Lisa Dorrian 14 years ago.
The 25-year-old was last seen alive in the Ballyhalbert Caravan Park in Co Down on February 28, 2005.
She had been attending a party before she went missing and her body has never been found.
Yesterday the PSNI said detectives had arrested a 49-year-old man and a 34-year-old woman in the Newtownards area on suspicion of murder.
Both were taken to Musgrave Serious Crime Suite for questioning.
The arrests follow a fresh appeal for information and new searches earlier this week to recover Ms Dorrian's body.
With new information from the National Crime Agency and the use of new technology, the latest search operation concentrated at a disused airfield beside the caravan park.
Chief Constable George Hamilton led the original investigation in 2005 and said the PSNI will not give up on the case.
At the Policing Board earlier this week, he appealed for anyone with information to examine their conscience and come forward.
Police say the new information from the NCA suggests Ms Dorrian was killed within hours of going missing.
New technology is being used in the latest searches, helping to examine underground areas.
Detective Superintendent Jason Murphy is leading the new investigation.
Appearing alongside Ms Dorrian's family earlier this week, he said he believed a small number of individuals had been involved in her death and disappearance.
"Those small number of individuals feel bonded together in what they know, and in effect if one tells they're all in serious trouble," he said at the time.
The victim's sister Joanne Dorrian, appearing alongside her father John and sisters Michelle and Ciara, also made an emotional plea for information.
"This is for Lisa, this is not for us," she said.
"The people who know where Lisa is knew Lisa; they knew the kind of person that she was, they knew the funny person that she was, and I just ask them to remember that.
"If they can come forward and please just help us to get some sort of peace, that's all that we can ask for."