An investigation has been launched into the death of Jean Smyth-Campbell in 1972.
The 24-year-old was shot while sitting in a car on the Glen Road in west Belfast on 8 June.
PSNI Chief Constable George Hamilton met with her family on Tuesday to update them on the development.
“I recognise the frustration of Jean’s family and representatives at the lack of progress in this case, and I am deeply sorry there were previous investigative failures into the circumstances surrounding her death,” George Hamilton said.
The independent investigation will be led by Bedfordshire Chief Constable Jon Boutcher.
He is also leading Operation Kenova into Stakeknife, however this investigation will be separate.
"The investigation will form no part of Operation Kenova," a statement from police said.
It added that the PSNI will meet the cost of the investigation.
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