A burned-out car found in Pinfold Lane, Alltami, near Mold, belongs to Catherine Gowing, who has been missing since she failed to arrive at work at a Veterinary Practice in Mold, North Wales, on Monday, police have said.
Confirming the news, Detective Superintendent John Hanson appealed to anyone with information about Ms Gowing or the car to contact police immediately to help relieve "the pain that Catherine's friends and family are going through".
A 46-year-old man from Gwynedd remains in police custody after being arrested on suspicion of her murder on Tuesday night.
More top news
The Met Office is warning of persistent heavy rainfall in western Scotland possibly leading to localised flooding.
The family of a World War One hero whose bravery won him a Military Cross have condemned thieves who stole the medal from a cathedral.
Scottish leader Johann Lamont's resignation highlights the post-referendum divisions.