Police person issued a caller entreaty for accusation astir the unsolved execution of a teen successful Northern Ireland much than 50 years ago.
The assemblage of Marian Beattie, 18, was discovered astatine the bottommost of a quarry.
She had attended a foundation creation astatine Hadden's Garage successful Aughnacloy, County Tyrone, connected Friday 30 March 1973 to perceive to her member playing successful the band.
The teenager, who had attended with a girlfriend, was past seen leaving with a young antheral conscionable aft 1am connected the Saturday and walking successful the absorption of a adjacent car parkland astatine the apical of Hadden's Quarry.
Her assemblage was recovered astatine the bottommost of the quarry - astir 80-100ft beneath the car parkland - soon aft 6am connected Saturday 31 March.
Detectives from Police Service of Northern Ireland's (PSNI) Legacy Investigation Branch person issued a caller entreaty for accusation amid a reappraisal into the death.
Detective Inspector Thompson said: "I admit this execution took spot implicit 50 years ago, but we would similar to speech to anyone who was astatine the dance.
"Marian went determination with a woman to perceive to her brother's band. Did you spot who she was dancing with oregon speaking with?
"Did you spot her permission the creation with a man? Do you cognize who helium was? Did you spot her successful the car parkland astatine the quarry immoderate clip aft 1.15am connected the Saturday morning?
"Additionally, bash you retrieve anyone who was astatine the creation returning location distressed oregon with ungraded connected their clothes? Has anyone ever talked astir the events of that night?"
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The detective urged each those with accusation to travel guardant successful a bid to assistance springiness the Beattie household "some closure".
DI Thompson added: "Marian's household merit to cognize what happened to her that night."