The father of a man shot dead in Brunel Road made an emotional appeal for people to come forward with evidence today.
Neville Foster said the death of his “loving and helpful” son Paul Foster in April this year has devastated the family.
So far three people have been arrested and released without charge and police are offering a £10,000 reward to those who can provide evidence.
Mr Foster, who lives in London, said: “Paul’s murder has affected me and my wife and my son’s health. I am deeply sorry that no one has come forward with information.
“Paul’s children are not coping very well, especially the two-year-old son who is always asking for his father and he wants to go to Jamaica to find his father. It’s very distressing.”
Mr Foster said he is taking medication for depression and cannot sleep at night.
He said: “When I go to bed I can just see Paul in front of me and it’s very very bad for me.
“There’s someone out there who knows who killed Paul and I am pleading with them, for the sake of Paul’s family, and for the sake of my family, I ask them to come forward to the police and tell them what you know.”
Paul, 46, was known as “Big Shine”, and left behind a wife and three young children.
He was well-known in the community, working closely with young people, and Mr Foster said Paul would do “anything anyone asked him to do.”
Speaking about the young men involved in so-called “postcode wars” and crime in Luton, Mr Foster said: “Paul was a very helpful young man to all those boys in Luton. He did a lot of things for those boys. I would ask each and every one of them to calm themselves, pull themselves together and be good.”
Det Supt Paul Fullwood said police know there are people in Luton who can solve the case.
He said: “While we have received information during this six month investigation that has been of great assistance to us, information is not evidence and without evidence we simply cannot bring the person or persons to justice who has committed this abhorrent crime.
“There are a number of people who can provide information in relation to the build-up to the shooting and the events on the night in question who have still not come forward and made statements. So what is it you are scared of? If it is concerns for yourself of family then talk to us about it, we have measures we can put in place to address these fears and anxieties.
“Personally my view is that this failure to assist comes as a consequence of misguided loyalty and a perception that assisting the police makes you an informant. This is absolutely not the case and until we change this view we will always find it incredibly difficult to bring these cowards who run around with guns to justice. My message is simple; carrying a gun does not make you a man, a leader, courageous. Brave men stand up and are counted, stand up for those who feel intimidated, stand up for what is right. When you find that courage my officers are waiting, if you don’t then when you look at yourself in the mirror know it is your lack of action that prevents your community being a safer place.”
As well as the £10,000 reward on offer today, a further £2,000 is available for anyone who has information that leads to the arrest and conviction of those responsible for or involved with gun crime.