The Wisconsin Department of Justice has issued its argument asking the United States Supreme Court to deny Brendan Dassey's request for a hearing before the highest court in the country.

The DOJ's brief, filed on May 10, argues that investigators used proper techniques to interrogate Dassey following the 2005 murder of Teresa Halbach.

The brief says "The Wisconsin Court of Appeals correctly articulated this Court's totality-of-the-circumstances stands for voluntariness and reasonably applied that standard to the facts."

Dassey is appealing his conviction in the murder of Teresa Halbach in Manitowoc County. It's a case Action 2 News has been following

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Dassey and his uncle Steven Avery are serving life sentences in prison for Halbach's murder. Dassey can ask for parole in 2048.

In February, attorneys filed a petition for the high court to review a federal appeals court decision which upheld Dassey's conviction.

A lower court magistrate had ruled Dassey's confession was coerced and he should be freed.

Dassey was 16 at the time of the interrogation, and his defense argues his low IQ made him susceptible to making an involuntary confession. The confession was a big part of the prosecution's case against Dassey and Avery.

Dassey's attorneys say the high court has reviewed similar cases.

“Too many courts around the country, for many years, have been misapplying or even ignoring the Supreme Court’s instructions that confessions from mentally impaired kids like Brendan Dassey must be examined with the greatest care -- and that interrogation tactics which may not be coercive when applied to an adult can overwhelm children and the mentally impaired,” said Dassey attorney Steven Drizin. “Meanwhile, DNA evidence has uncovered dozens of cases involving false confessions from children. The time is now for the Court to reaffirm this country’s commitment to protecting kids in the interrogation room.”

The State's brief asserts that Dassey "unexpectedly confessed to investigators that, at his uncle's urging, he had raped the victim while she was tied up in bed and begging for mercy, and soon thereafter confessed to helping kill her and burn her body."

The state argues that proper procedures were followed.

"They began by asking Petitioner's mother for permission to talk to him and by reading him his Miranda Rights. Throughout the three-hour, noncustodial interview, investigators used only standard techniques such as adopting a sympathetic tone, encouraging honesty, and challenging his story when they believed he was lying," reads the brief.

The state does end its brief by saying someday the court may be more restrictive when it comes to juvenile confessions, but the court can only consider "clearly established" law when it comes to the Dassey case.

"This Court may, someday, adopt the restrictive approach to juvenile confessions that Petitioner and his amici favor, concluding that the cost in 'terms of justice' that troubled Judge Hamilton is worth imposing because juvenile interrogations are inherently coercive absent truly extraordinary precautions.

"Or this Court may mandate some more incremental change to its juvenile-interrogation caselaw, reflecting a balance between the need to investigate crime and limiting techniques that research has revealed to be more problematic than previously thought.

"This Court may even eventually conclude that some of the techniques that Petitioner’s amici criticize should no longer be permitted in juvenile cases. Precisely because these choices are so consequential and sensitive, this Court should not grapple with them in the context of AEDPA review, where the only proper question is whether the state court unreasonably applied this Court’s current 'clearly established' law."

A number of high-profile groups, including the American Pyschological Association, have urged the Supreme Court to review Dassey's case.

In its amicus brief in support of Dassey, the American Psychological Association gave the opinion that coercive techniques were used in the interrogation. The organization says those techniques increase the rate of false confessions.

Dassey's legal team is led by former United States Solicitor General Seth Waxman. Waxman has argued 80 cases before the United States Supreme Court.

Dassey's legal team says if the Supreme Court agrees to hear the case, it will be the first juvenile confession case of its kind to go before the high court in nearly 40 years.

The Avery and Dassey cases became international news after Netflix released the docu-series "Making A Murderer."

Action 2 News will continue to update this developing story.