New SECRET recordings found in the case of child killer, Keli Lane

Thousands of telephone calls that were recorded by police during the investigation into convicted child killer Keli Lane were never disclosed during her 2010 murder trial.

And now a Supreme Judge has called for an investigation into exactly why the calls were not heard by Keli Lane's defence team during her trial into the death of her baby daughter, Tegan. 

While it's not known what is on the calls, the ABC's Exposed documentary program has discovered that up to 2,000 conversations and listening device recordings captured by police in 2004 and 2008 were not disclosed.

That means that only 6 per cent of all the calls the police recorded were given to her lawyers. 

Keli Lane was jailed for 13 years after being found guilty of the murder of her baby, Tegan.

Keli gave birth to Tegan at Sydney's Auburn Hospital on 12 September 1996. Two days later she left the hospital and the baby has never been seen again. Her family, friends and her partner claim they did not know she had been pregnant.

The former water polo player was sentenced to 18 years in prison for Tegan’s murder. Lane has always claimed she gave the child to a man by the name of "Andrew Morris" or "Andrew Norris", whom she says was the child’s father.

After her trial the RMIT University’s Innocence Initiative  launched a campaign saying that the conviction had all the typical hallmarks of a “wrongful conviction”.  They have taken the police force to the NSW Civil and Administrative Tribunal in a bid to access the missing recordings but so far they have refused to do so.

A top judge has said that the fact the recordings were NOT given over to the defence in a trial that gripped the nation, is "very serious" and may amount to a miscarriage of justice.

Described as a "golden rule" of the criminal justice system, the duty to disclose all evidence is fundamental to a fair trial.