4:32 pm, Thu 21 Mar 2013
It is not the first time the murder of Debbie Linsley has been re-investigated. In 2002 police thought that they had made a similar breakthrough, giving them the ability to complete a map of the killer's DNA , left behind at the scene.
Here is a news report from 13 September 2002.
4:07 pm, Thu 21 Mar 2013
Police have re-launched the murder investigation of a woman who was murdered on a train travelling to London. They are appealing for information after detectives announced a DNA breakthrough that could help identify the murderer of Debbie Linsley.
Ronke Phillips has more.
12:50 pm, Thu 21 Mar 2013
Police are appeal for fresh information to help solve the murder of Debbie Linsley.
She was stabbed to death on a train travelling from Orpington to London Victoria in 1988.
Twenty five years on from the murder of Debbie Linsley, an innocent woman on a train in broad daylight, we are still hopeful that the murderer can be caught.
The passage of time has not diminished the shocking nature of this crime; it has just made it harder to bear for her loved ones, when justice has not been achieved.
We still believe there are people out there with information that could be vital to a breakthrough in the case.
I would urge those people to call us. I can assure them that they will be dealt with sensitively
– Detective Chief Inspector Chris Burgess, Head of Specialist Crime Review Group
11:22 am, Thu 21 Mar 2013
The father of murdered Debbie Linsley appeals for more information that could help solve the case
We will have more of this interview on our evening programme at 6pm.
9:32 am, Thu 21 Mar 2013
Police have re-opened an investigation into a murder that happened 25 years ago.
Debbie Linsley was brutally murdered in 1988 whilst she was travelling on a train from Orpington to London Victoria.
Debbie Linsley was brutally murdered on the Victoria line in 1988
The murder shocked the nation, but the killer was never caught.
However, detectives announced a DNA breakthrough that could identify the murderer.
They have resubmitted bloodstains from the murder scene to the Forensic Science Service which, using sensitive, new techniques, has pinpointed the killer's "genetic fingerprint".