Keith Murrain was murdered in Jamaica
Police have been asked to investigate possible UK links to the savage assassination of a Birmingham businessman in Jamaica.
The call to the West Midlands force came as Caribbean detectives continued to hunt the killers of Keith Murrain, found buried in a sugarcane field six months ago.
The Edgbaston 54-year-old's throat was cut after he was snatched from a hire car shortly after flying into the capital Kingston.
Jamaican police are yet to make an arrest.
Mr Murrain's family have publicly criticised the way the case has been handled on the sunshine island and have called on West Midlands Police to launch an investigation in this country.
Brother Samuel said: "Last week my mum said she is ready to die, she is preparing to die, but we need justice before that happens.
"I think the way this has been treated in Jamaica is disrespectful to the people of England.
"It's as if they want to sweep it under the carpet, but I will fight to my last breath to stop that happenning."
Samuel Murrain picking up tickets for Aston Villa's home match against Manchester United with Chief Executive, Tom Fox
Community activist Desmond Jaddoo, who is co-ordinating the family's campaign for justice, said: "It is now time to make enquiries in the UK.
"He was a British national.
"The family require justice and closure and the only way that can happen is a full investigation on both sides of the water.
"The initial lack of communication (in Jamaica) has led to massive frustration for the family.
"It has taken six months for proper lines of communication to be opened."
Mr Murrain was travelling from Kingston's Norman Manley Airport in a hire car when he was abducted while relieving himself by the roadside and bundled into a waiting vehicle.
The former Great Barr Comprehensive School student had built-up a thriving business exporting engineering parts to Jamaica and Trinidad.
He was a regular visitor to Jamaica, where he reportedly had a home in the gated Caribbean Estates Community, said to boast "Fort Knox-esque security".
In a letter to West Midlands Police, Mr Jaddoo stated: "Recently the Murrain family have advised me that there have been rumours that the murder has a UK link.
"This has recently been compounded by the fact that they have received messages to this effect from Jamaica also.
"Having discussed this with Mrs Josephine Murrain, the family are requesting that West Midlands Police investigate the ever developing issue that this could have been a conspiracy started in the UK."