An interim report on the investigation into the M9 crash which killed two people has been submitted to the Lord Advocate.
The police investigations and review commissioner (Pirc) was tasked with carrying out the independent probe following the deaths of Lamara Bell, 25, and John Yuill, 28, in July.
The couple died after lying in a crashed car off the M9 near Stirling for three days after it was first reported to police.
Mr Yuill died at the scene, while Ms Bell was critically injured and later died in hospital.
Former chief constable of Police Scotland Sir Stephen House apologised to their families after it emerged officers had failed to follow up a call from a member of the public.
Police were contacted on July 5 regarding a sighting of the couple’s car, but the call was not logged in the police system and no action was taken.
The car was found when another call from a member of the public three days later prompted police to investigate.
A statement from Pirc said: “The commissioner has submitted an interim report to the Lord Advocate on her independent investigation into the circumstances surrounding the deaths of John Yuill, 28, and Lamara Bell, 25, following the recovery of a car close to the motorway at Bannockburn on July 8 2015.
“The Lord Advocate will now consider the interim report and the commissioner will undertake further inquiries as required.”
A wider report on police call handling by Her Majesty’s Inspectorate of Constabulary in Scotland (HMICS) has already made a series of recommendations to Police Scotland.