MADISON (WKOW) -- It's one of Wisconsin's most notorious crimes, and now a state appeals court has rejected Brendan Dassey's request for a new trial.
Dassey was sentenced to life with no parole for 41 years, after his conviction in 2007 of first-degree intentional homicide, second-degree sexual assault and mutilation of a corpse in the 2005 killing of Teresa Halbach in Manitowoc County.
The killing garnered extraordinary attention partly because Dassey's uncle, Steven Avery, was also convicted in the case. Avery had previously spent 18 years in prison for rape before DNA samples proved another man committed that crime.
Dassey's defense attorneys argued police coerced his confession and his trial attorneys were ineffective.
Wednesday, the 2nd District Court of Appeals rejected those arguments, upholding Dassey's convictions.