Detectives have reopened the investigation into the murder of a man who was shot multiple times in his flat in Hampshire 35 years ago.
Police have made the decision following advances in forensic science.
Richard Haywood, commonly known as Ricky, was killed in an attack at his home above Ambiance Jewellers in Shirley Road, Southampton, on 16 October 1989.
No one has ever been charged with the 36-year-old’s murder.
Police have said his family are “desperate to know the truth”, with his sister saying the murder “slowly ate away” at her mother who died without ever finding out who killed her son.
The charity Crimestoppers is offering a reward of £20,000 for information, that can be given anonymously, which leads to an arrest and conviction in the case.
A Hampshire Constabulary spokesman said: “The advancements in forensic science over the past 35 years will now allow the investigation to pursue this as one of the main lines of inquiry.”
Detective Inspector Elizabeth Brunt, who is now leading the investigation, said: “As we review the evidence available to us, I would like to appeal to anyone out there who may hold information about what happened to come forward and speak to us.
“I believe someone knows why Ricky was killed and who was responsible. Whatever your allegiances, you would be doing the right thing by telling us what you know.
“I would urge those people to think about Ricky’s family, who have waited more than 35 years to find out why someone killed him.
“While Ricky’s mother died broken-hearted, the rest of his family are desperate to know the truth.
“We need to give his family the answers they rightly deserve, to get justice for them and for Ricky.
“Your help is needed and now is the time to communicate what you know, either directly, anonymously or through a third party – doing nothing is no longer an option.”
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In a statement issued through police, Mr Haywood’s sister said: “We cannot express enough the huge impact Ricky’s death has had on us.
“The pain never goes away. My mum never had peace and it slowly ate away at her. She went to her grave never knowing who committed this awful crime.
“I, as Ricky’s sister, have to live with the pain of his murder and knowing how my mum suffered too.
“We pray this new appeal will urge someone to come forward and hopefully after all these years find justice and closure.”