North Wales Police have confirmed that the 57 year old Warrington man being questioned in connection with the death of a woman, also from the town, was married to the victim.
The body of the 49-year-old female victim was found in the boot of a car outside the police building.
The man was arrested on suspicion of murder and is currently in custody at St Asaph.
More top news
A group of children from Colwyn Bay may have hopped into the unofficial record books by creating a local hopscotch course.
A vulnerable missing man was forced to work 15-hour days with no pay for 13 years, a trial at Cardiff Crown Court has heard.
Adrian Masters and Andrea Byrne present Monday's special edition from Edinburgh and Cardiff.