A grieving dad handed Martin McGuinness and Jeffrey Donaldson a photo of a body by a roadside yesterday, saying: "This is the last picture I have of my son. He's lying there with his head almost cut off."
Paul McIlwaine brought the shocking photograph of his son David's body to Stormont as he appealed for help in resolving the long-running double murder.
Mr McIlwaine met the Deputy First Minister and the Junior Minister for more than an hour in Parliament Buildings yesterday to discuss the killing of his son and Andrew Robb in February 2000.
The two Portadown teenagers were abducted after a night out in Tandragee, Co Armagh. Their throats were cut by a remote roadside.
Feuding UVF members were blamed for the deaths.
Two men are due to go on trial for the murders later this year, but Mr McIlwaine believes a security force agent ordered the killing and has been shielded from prosecution.
Mr McIlwaine said yesterday's meeting "went very well".
"I told them I welcome the DUP and Sinn Fein coming together on this matter," he said.
"I showed them the photo and said political issues and religion don't come into it.
"There's no reason why we shouldn't pursue the truth."
Mr McIlwaine appealed for help from the First Ministers' Office in pursuing questions about security force contracts awarded to the man he believes ordered the murders.
The Co Armagh man - who was awarded lucrative contracts with the police and other agencies - has never been charged.
He was linked to a hit list found by detectives investigating the murders, but that list was later destroyed on the instructions of police.