ATOKA COUNTY, Oklahoma - Authorities are looking for a 57-year-old Pawhuska man who was reported missing from the Mcleoad Correctional Center in Atoka Sunday evening.  

The Oklahoma Department of Corrections says Onie Chambers was in prison for an Osage County conviction in June 2015 for failing to notify authorities of an address change as a sex offender.  

Department of Corrections records show Chambers was scheduled for release in 2020.