Two women aged 23 and 19 years and a 32-year-old man have been arrested in connection with a crash on the A8 Glasgow Road at Newbridge near Edinburgh.
The incident happened around 9.25am on Monday, 7 September, and involved four vehicles.
The driver of one vehicle, a 58-year-old woman, was pronounced dead at the scene.
Four others were taken to hospital for treatment and released.
Sergeant Mike Thomson said: “Our thoughts remain with the family of the woman who died.
“Enquiries are ongoing to establish the full circumstances.”
