Steven Avery Sr.’s twin sons, Bill Avery and Steven Avery Jr., spoke out for the first time about the case centered on their father, who is currently serving a life sentence in a Wisconsin prison for the 2005 murder of photographer Teresa Halbach.

Steven Avery Sr.’s case gained national attention after the debut of the Netflix docuseries, “Making a Murderer.” After Netflix users watched the 10-part docuseries, many were left wondering whether he was framed in the criminal case brought over Halbach’s death. His nephew, Brendan Dassey, is also in prison, convicted on charges related to the crime.

Speaking in a Crime Watch Daily interview set to air Monday, Bill Avery said he doesn’t think his father is guilty of the crime. However, Steven Avery Jr. said he wasn’t sure and that the only person who could answer that question is Halbach.

“The only thing I know is that the entire case was very shady, it’s clear that there was corruption,” Steven Avery Jr. said. “Him and Brendan deserve a fair trial. That’s kinda my take on it, they deserve a fair trial. ’Cuz if they’re guilty, let them sit, but if they’re [not guilty], get them out.”

He also said it “sucks” that their lives are so public, but admitted he hopes the exposure will help people see a “bigger picture.”

Steven Avery Sr. has consistently said he was not responsible for Halbach’s death and wrote in a statement last month that he wanted “every forensic test possible done” to prove he didn’t kill her.

Even though Steven Avery Sr. is maintaining his innocence, Ken Kratz, the former district attorney of Calumet County who prosecuted the now-53-year-old prisoner, is adamant the right person is behind bars. Kratz said he plans to provide more evidence against the prisoner in a book he’s working on.

“There are parts of this case that no one else knows,” Kratz told Page Six, adding that the Netflix docuseries “slanted evidence” to make it appear as if he was the villain. “This was a case that included the murder and dismemberment of a 25-year-old woman. It’s not fair to her memory or to her family. They deserve some closure.”