A 77-year-old man has been arrested in connection with the deaths of a mother and her young son more than 40 years ago.
Renee MacRae, 36, from Inverness, and Andrew, three, vanished on 12 November 1976.
Police said the man was expected to appear at Inverness Sheriff Court on Wednesday.
Mrs MacRae’s car was found on fire close to the A9 by a passing bus driver about 12 miles south of Inverness.
The bodies of the mother and son have not been found, police said.
The man was arrested in the north of England on Wednesday morning by detectives from Police Scotland’s Major Investigation Team.
Police Scotland said a “detailed forensic search” of Leanach Quarry, near Inverness, started earlier this year in connection with the investigation was continuing.