Police describe Zachery Walter Hahn, 23 as about five-foot-nine and 175 pounds. He has blue eyes, brown hair, but had shaved his head at the time of his escape.
Hahn was last seen wearing a grey hoodie and a toque.
Police say Hahn frequently visits Regina.
Saskatchewan Correctional Service initially searched in and around the Yorkton and Regina regions, but was unable to locate him.
Anyone with information is asked to contact their local police detachment or Crime Stoppers at 1-800-222-8477.