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Making a Murderer's Steven Avery could be one step closer to freedom following bombshell new claims that the FBI did not confirm that the bones they tested belonged to Teresa Halbach.

The allegations contained in court transcripts and evidence logs purport to show that Wisconsin state DNA expert Sherry Culhane - sent only "charred material."

On January 20 2006, Calumet County Sheriff Jerry Pagel released a statement to the media insisting the FBI had confirmed the bones were matched to Teresa's.

While on February 7, shamed prosecutor Ken Kratz sent an email to Culhane - who was responsible for analyzing the bones locally - reiterating that statement.

(Image: Netflix)

However it's now been questioned whether FBI even tested 'bone fragments' since the piece of evidence marked BZ in the case was "charred material" and that it was never proven to match with Halbach's.

Instead it was a general mitochondrial DNA match connected to a relative of Miss Halbach's mother.

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According to campaigners none of the protocols were followed and the 'bones' found were not logged properly meaning evidence could easily have been tampered with.

Blogger Amberlea1879 has pored over evidence on the Reddit forum which she says suggests collusion was going on between Ken Kratz and Sherry Culhane.

And she's sent her research to lawyer Kathleen Zellner - who apparently confirmed receipt and is looking into the claims as part of her evidence gathering process.

Meanwhile in another startling piece of research which gives a blow by blow account of the breaches of protocol in the case - another compelling insight shows how the whole thing could now be turned on its head.

(Image: Netflix)

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Stop Wrongful Convictions Campaigner and author Lynne Blanchard says: "Everyone accepts as fact that Teresa’s remains were found in the burn pit.

"Obviously it appears to be very incriminating, but what is going on with this evidence?

"Why weren’t protocols followed?

"No coroner, forensic anthropologist, arson investigator or photographer was called to the scene when the evidence was discovered.

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"They had all of these high paid experts at their disposal and didn’t call on them until after the evidence had been shoveled up and taken to the sheriff’s office.

"The DNA evidence described above is not conclusive.

"How is it even possible for tissue to survive a fire that disintegrated 60% of the bone mass?

"The teeth which are commonly used to identify a body because they outlast bone didn’t even survive the fire.

(Image: ID)

"Something’s wrong and it becomes difficult to accept this evidence as presented."

According to Lynne, lab analyst Sherry Culhane issued a report on December 2005 stating that a partial profile was obtained from a charred piece of tissue and that seven of sixteen markers matched Teresa’s standard profile.

She added: "The absence of a chain of custody of the bones is critical because it could very well have rendered it inadmissible. What happened?

(Image: Netflix)

"They brought in the state officials right away to ensure that everything would be properly handled. Who dropped the ball? It is very suspicious given everything else that happened in this case.

"Since the scene wasn’t documented, there is no proof that any bones were ever on the Avery property.

(Image: State of Wisconsin)

"As well, the Manitowoc County coroner was forbidden from entering the scene and none of the forensic experts were summoned until after the bones had been removed.

"We are to simply accept the word of the state witnesses who claimed to see the bones."