Justice Minister Naomi Long has urged those who know where missing Bangor woman Lisa Dorrian is secretly buried to come forward.
Ms Long made her remarks in the Stormont Assembly a day after the Dorrian family marked 16 years since Lisa disappeared.
Lisa was last seen alive at a party in Ballyhalbert Caravan Park on February 27 2005.
There have been extensive searches of the area, including of a disused airfield in 2019.
Earlier, First Minister Arlene Foster showed her support to the Dorrian family by retweeting a video appeal for information to help find Lisa.
Ms Long said the Dorrian family have not only been robbed of a loved one, but also deprived of the opportunity to be able to go to her graveside.
“The most important thing I can say given the platform I have today, to those who are involved and who know where Lisa Dorrian’s body is and who know what happened in her final hours, is to reflect on your conscience and tell the family the truth, report it to the police and allow this family to grieve the loss of Lisa without further obstruction and without the further torment of not knowing where her remains lie,” she said.
“What you have done is completely wrong, it is completely unacceptable but you can help now by telling the truth and allowing the family to grieve.”
Anyone with information should call detectives on 101 or talk anonymously to the independent charity Crimestoppers on 0800 555 111.