Photo: Netflix

Documentary filmmakers reportedly claim a Wisconsin inmate confessed to killingTeresa Halbach,whose murder case was made famous in the hit 2015 Netflix docuseriesMaking a Murderer.
The bombshell news of the purported confession comes asSteven Avery, 57,and his nephew, Brendan Dassey, 29, are serving life sentences after being convicted of murdering the 25-year-old photographer in Wisconsin in 2005. Both maintain they are innocent.
The director of the upcoming documentary seriesConvicting a Murderersaid his crew received the alleged confession during filming – but says they will keep the convicted murderer’s identity under wraps until law enforcement“has access to said confession,”Newsweekreports exclusively.
Avery and Dassey aren’t the ones who allegedly confessed, Rech said.
“Having been in production for 20 months, we’ve uncovered an unfathomable amount of information and evidence that is leading us to the truth,” Rech said. “Our investigation does not end here.”
Halbach Family/Herald Times Reporter/AP Photo

Not so fast, says Avery’s high-profile attorney,Kathleen Zellner,who is famous for freeing the wrongly convicted and is currently trying to exonerate Avery.
“We received the handwritten confession on Saturday,” Zellner posted on Twitter Monday. “It is worthless unless it is corroborated.”
Zellner joined Avery’s team after part 1 ofMaking a Murdererpremiered and became akey character in part 2.
“I have one goal,” she says in part 2, “and that’s to overturn the conviction of Steven Avery.”
On Sept. 9, Zellner and her team posted a $100,000 reward for information leading to the “arrest and conviction of the real killer of Teresa Halbach,” it says.
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There was also the fact that Avery had been wrongfully convicted of a sexual assault and attempted murder in 1985.
After he was exonerated, he was released from prison in 2003, after serving 18 years of a 20-year sentence. He filed a $36 million lawsuit against Manitowoc County.
He settled for a much smaller amount, but it left many wondering if he was being framed for Halbach’s murder as some sort of payback from the county.
Zellner and law enforcement in Wisconsin did not immediately respond to PEOPLE’s requests for comment.
source: people.com