DETECTIVES investigating the murder of Witney couple Peter and Gwenda Dixon were questioning a man about the double shooting on a Welsh cliff-top nine years ago.
The 51-year-old marketing manager and his wife were enjoying a camping holiday near Little Haven in 1989 when their killer blasted them to death with a shotgun on a coastal path.
A scruffy cyclist, dubbed the Wildman, was seen using Mr Dixon's card at three cashpoint machines shortly afterwards but despite extensive inquiries Dyfed-Powys Police drew a blank.
Last month, BBC's Crimewatch programme highlighted the unsolved case and police set up an incident room to field hundreds of calls from members of the public.
The Dixons' son Tim, 35, a worker at Harwell Laboratory, backed the programme and said he hoped the new interest would lead to an arrest.
A 53-year-old suspect is now being held in custody at Haverfordwest.
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