Police have confirmed that they are currently conducting searches for the body of missing Bangor woman Lisa Dorrian.
A large scale search operation is taking place in the caravan park in Ballyhalbert where Lisa was last seen alive in 2005.
Police are also searching a disused airfield behind the caravan park.
Detective Superintendent Jason Murphy is leading the investigation and said that police would be searching a number of others areas over the coming days.
“The determination of the PSNI to bring those who killed Lisa Dorrian to justice is as strong today as it has ever been," he said.
“The purpose of the search operation is two-fold: Firstly I want to recover Lisa’s body and allow the Dorrian family to finally put Lisa to rest. And secondly I am looking for evidence relating to her disappearance.
“Our relationship with Lisa’s family remains very positive and they have been updated on the current investigative position.”
Lisa had been socialising with a group of people throughout the weekend of Friday February 25 and Sunday February, 27 2005.
She ended up at a party at a caravan site in Ballyhallbert, 30 minutes from her home in Bangor.
Lisa was last seen alive in the caravan around 10pm on Sunday February 27.
Police believe she was murdered that night or in the early hours of the following moring.