DETECTIVES investigating the 1975 murder of Hounslow schoolgirl Lynne Weedon have DNA tested nearly 100 men since their appeal six months ago and are looking for new suspects.
Lynne, 16, was raped and bludgeoned to death 33 years ago but her case hit the headlines again last September when detectives linked it to the stabbing of a 22-year-old playboy bunny.
Glamorous Eve Stratford died six months before Lynne in east London but the discovery of a DNA link last autumn was the first time the two cases had been connected.
Fresh appeals made at that time prompted around 80 phone calls from suspicious residents and dozens of new suspects were asked to give voluntary DNA samples but no match was found.
Det Ch Insp Andy Mortimer, from Belgravia's homicide squad, said: "It's been very frustrating. We got a tremendous response to the appeals and we've been going around interviewing people with a view to eliminating them through DNA. Unfortunately, no one has matched.
"It's great to have eliminated so many suspects but now we need some new leads to work on."
Lampton School pupil Lynne was found slumped in an alleway between the Great West Road and her home in Lampton Avenue on September 3, 1975.
The unconscious teen was rushed to West Middlesex Hospital by police and ambulance staff but her head injuries proved too severe and she died a week later without ever coming round.
At the time officers had little reason to link the brutal killing to that of bunny girl Eve, who was found in her Leyton flat on March 18, 1975, with 12 stab wounds to her throat.
But last year a scientific review of cold cases finally uncovered an unlikely DNA link between the two crimes.
DCI Mortimer says the investigation is still ongoing but detectives are relying on members of the public to provide them with some new leads.
"I'm still pretty sure the person involved will have told someone over all these years," he added. "If anyone has any suspicions at all I'd ask them to come forward, whether the suspect is still alive or not.
"I know some people may worry about causing trouble for a husband, brother or friends after so many years but as long as these girls' families are out there we have a duty to keep looking."
Anyone with information can call in confidence on 020 7321 7228.