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.
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A cold night but temperatures remain above zero
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Outbreaks of rain will continue through the night, turning heavy in places