A US appeals court has upheld the conviction of Making a Murderer's Brendan Dassey.
Him and his uncle Steven Avery were convicted of murdering Teresa Halbach, whose charred remains were found at Avery's house, in 2005.
Dassey's conviction was overturned last year on the basis that the confession - made when he was 16 years old - was forced by authorities, however yesterday, judges voted 4-3 that his testimony was voluntary.
The split decision from the Seventh Circuit Court of Appeals, which is based in Chicago, makes it far less likely the 27-year-old will be freed.
Dassey was locked up for his alleged involvement in the murder of Teresa Halbach in 2005, before it was revealed in the show that his confession had been obtained under coercion during a two-day long interrogation, large periods of which he was without a lawyer or any responsible adult present.
There was never any physical evidence that linked him to the murder of Teresa Halbach but Dassey, who has learning difficulties, remains behind bars in Wisconsin.
Credit: Netflix/Making A Murderer
One of the judges, who voted that Dassey's confession was not voluntary, told the Chicago-Sun Times: "His confession was not voluntary and his conviction should not stand. I view this as a profound miscarriage of justice."
Judge Ilana Rovner wrote: "What occurred here was was the interrogation of an intellectually impaired juvenile.
"His confession was not voluntary and his conviction should not stand, and yet an impaired teenager has been sentenced to life in prison."
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