The family of missing Bangor woman Lisa Dorrian has said it is important to give her a proper burial and bring them some closure.
Patricia and John Dorrian appeal for help to find Lisa's body
The 25-year-old has not been seen since leaving a party at a caravan park in Ballyhalbert, County Down, on Monday 28 February.
Earlier, a man questioned about her murder was released.
Lisa's family made a public appeal for anyone who knows where her body is to contact the police.
They said it had been a very difficult two weeks and thanked people for their support.
It was the first time the family had spoken publicly since detectives announced they were treating the disappearance as murder.
John Dorrian said telling his youngest daughter Ciara that her sister was dead was the hardest thing he had ever had to do.
He said someone must know where her body was and urged them to tell the police.
Lisa left her handbag and personal belongings behind at a party
Lisa's sister Joanne said anyone with any information should try to imagine what the family was going through.
"We just want to lay Lisa to rest," she said. "We can't grieve until we've had a funeral."
On Tuesday, police officers investigating the murder searched a yard behind premises in Ballywalter, County Down.
Two other men questioned about the killing were released on Friday.
When she disappeared, Lisa, a shop assistant, left her handbag and personal belongings behind her and has not made contact with friends or family since.
Detectives investigating the murder returned to the caravan park on Saturday to talk to caravan owners and local residents.
A caravan from the site has been removed for examination.
Extensive air and land searches have taken place since her disappearance. Underwater search teams were also used.