NASHVILLE, Tenn. - Police have a new lead in the four year old murder case of David Martin, a former pizza manager who was gunned down outside his South Nashville apartment.
For the past three years, David Martin's family members have solicited information from the public about the murder of their 27-year-old son.
"This is my son. He was murdered at his apartment down the road," said the victim's father, Chris Martin, showing a photo of David.
David Martin was shot and killed during a robbery at his apartment on Packard Drive in August 2007.
"It was basically a home invasion. They approached him and invaded his house" said David's mother, Joanne Martin.
For years, the Martin Family has been critical of the initial police investigation. Recently Martin's mother JoAnne even wrote a letter to Nashville Police Chief Steve Anderson with complaints about how police left their son's apartment unlocked and would not return phone calls just a few hours after the murder.
"If we'd known what we know now we would have pushed harder from the very beginning, and I think it would have made a difference at the beginning, "said JoAnne Martin.
"We now know that (David's case), we feel was handled very poorly at the outset. The best chance of catching the murderer is right after the incident occurs, and the investigation was cursory at best that first few hours after they were there," said Chris Martin.
Metro's Cold Case unit is now handling the case, and there appears to be a promising new lead.
Detective Pat Postiglione said a new tip looks more credible than information received in the past.
"The information, of course I can't go in to detail, but some people have come forward and given us some information that may ultimately lead to a suspect in terms of possible names and that type of things, so we're looking at it from that angle," said Postiglione.
And now, for the first time since the murder, the Martin family seems comfortable with what police are doing.
"We feel the cold case unit is you know they're a professional team of people who are highly dedicated and motivated and we're extremely pleased they are handling it," said Chris Martin.
The Martins have other children, and since the 2007 murder there have been marriages and a grandchild, but the family said they won't rest until there's justice for David.
"You know it's just sad that David is not here to share in those experiences," said Chris Martin
If you have information about the murder of David Martin you can call Crime Stopper at 74- CRIME.