MANITOWOC — Steven Avery's lawyer has tweeted out a photo of a letter she says was written by Avery in prison.
Kathleen Zellner posted the letter on her Twitter account on Wednesday.
The handwritten letter, signed by Avery, is addressed to his supporters.
"There are times I feel like giving up," the letter says. "I've been in prison for 34 years as an innocent man. THIS IS NOT JUSTICE."
Avery writes he was framed by "corrupt prosecutors, bad lawyers and crooked cops".
Steven Avery was first released from prison in the early 2000s after serving time for a 1985 sexual assault that he didn't commit. Avery was then convicted in 2007 for the murder of Teresa Halbach in Manitowoc County. His legal battles are the subject of a documentary series on Netflix, Making a Murderer, which has received widespread attention.
"I need all the public support you can give me," Avery writes. "I will not give up if you do not give up on me. Thank you for your support, Truth Wins."
Avery is currently appealing his conviction.