Steven Avery of ‘Making a Murderer’ Requests Advanced Forensic Testing Amid Claims Officers Planted Evidence

andjic/iStock/Thinkstock(MANITOWOC, Wisc.) -- Steven Avery, the center of Netflix's hit series Making a Murderer, made a request Friday for more forensic testing, which his lawyers call "the most comprehensive, thorough, and advanced forensic testing ever requested by a criminal defendant in the State of Wisconsin."

In the 45-page motion, Avery asks for "post-conviction testing of physical evidence," noting that since his 2007 trial, "considerable progress has been made in forensic DNA methods, procedures and tests, including the development of tests for the specific detection of blood, saliva, semen and urine."

Avery's motion says he is willing to pay for testing.

Avery was sentenced to life in prison without parole in 2007 for the murder of Teresa Halbach. But when the Netflix series Making a Murderer was released last December, it created renewed interest in his case and led many to believe that Avery was wrongly convicted.

Avery has claimed law enforcement planted samples of his blood, collected from Avery during a previous case, in Halbach's car before it was discovered by police on Nov. 5, 2005. In Friday’s filing, Avery accuses James Lenk and Andrew Colborn of the Manitowoc County Sheriff’s Office of being “connected to” the discovery of every item of evidence that he says was planted. Lenk and Colborn both denied planting evidence during the 2007 trial, the Milwaukee Journal Sentinel reported at the time.

Avery is now seeking "body fluid source testing that could identify the source of the bodily fluids found on the victim’s vehicle key and hood latch," according to the motion, including saliva and blood testing. New technology can now distinguish whether DNA comes from blood, saliva, semen or urine, according to the filing, and Avery says if he was bleeding from his finger as prosecutors say, there should be blood on the hood latch.

Avery is also asking for radiocarbon testing, "which could definitively establish the age of Mr. Avery’s blood found in the victim’s vehicle and determine, based on the age, if the blood was planted," the motion says.

His lawyers are requesting new DNA testing on evidence that had not been screened before, including the battery cable, the interior hood release and the blinker light of the victim’s car. Moreover, Avery's defense team is asking for advanced DNA analysis on previously-tested items, such as the license plates and swabs taken from the vehicle, and trace testing to determine if chemical solvents were used to remove DNA.

The advanced testing of previously obtained fingerprints of two officers, as well as DNA testing of the alleged human pelvic bones recovered from the quarry, has been requested as well.

Avery’s attorney has asked for his appeal to be put on hold until a ruling is made about the testing.

After Netflix released the series, Kathleen Zellner, a high-profile attorney with experience representing wrongfully convicted clients, took on Avery's case.

Zellner told ABC affiliate WBAY-TV in January that Avery was "thrilled that there is new development in technology," and was feeling "extremely positive" knowing new forensic testing can be done in his case.

“Since 2007, there have been significant advances in forensic testing," Zellner told WBAY-TV at the time. "The clearest way to do this is with scientific testing and that’s what we will be asking to do."

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