Convicted killer Steven Avery has been moved from a maximum-security prison to a medium-security prison.The information on the Department of Corrections website includes a new picture of Avery.This week, he was moved from Waupun Correctional Institution to Fox Lake Correctional institution.He is serving a life sentence for the 2005 murder of Teresa Halbach.Avery is appealing his conviction.The case gained international attention with the Netflix documentary series "Making a Murderer."