WELSH serial killer John William Cooper was given four life sentences for a series of grisly murders in Pembrokeshire in the 1980s.
Cooper, a diagnosed psychopath, was eventually convicted in 2011 for the double murders of Richard and Helen Thomas and Peter and Gwenda Dixon following a cold-case review that started in 2005.
Who is John Cooper and where is he now?
John Cooper, 76, is a serial killer with a long history crimes which include 30 robberies and violent assault.
He was sentenced to 14 years in 1998 for burglary and robbery but was released in 2009.
Through a cold case review, he was arrested and convicted of two double murders dating back to the 1980s.
Cooper, who unsuccessfully tried to appeal his convictions in September 2011, is still behind bars in an undisclosed prison.
When did Cooper murder four people in Pembrokeshire?
Cooper was referred to as the Bullseye Killer because he appeared on the popular game show four years after killing two siblings in Scoveston Park.
He murdered brother and sister Richard and Helen Thomas then burned down their house on December 22, 1985.
On 28 May 1989, Cooper participated in a recording of the ITV game show Bullseye.
Just one month later, he robbed Peter Dixon of £300 and shot he and his wife Gwenda in the face at point blank range.
How long was the investigation into the deaths?
Cooper infamously evaded justice for around two decades but was finally convicted using the most advanced forensic techniques of the time.
He was sentenced to a whole life jail term at Swansea Crown Court in May 2011 following an eight-week trial.
On May 26, 2011 Cooper was given a whole life order for the 1985 double murder of siblings Richard and Helen Thomas, and the 1989 double murder of Peter and Gwenda Dixon.
His first prison sentence allowed cops to collect further evidence against him to convict.
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