Steven Powell, father-in-law of missing Utah mother Susan Powell, to be released from prison next month

Steven Powell talks in Puyallup, Wash., about missing daughter-in-law Susan Powell on Aug. 19, 2011. Powell is charged with voyeurism and possession of child pornography and arrested on Sept. 22, 2011, authorities said
AP Photo/The Salt Lake Tribune, Rick Egan

(CBS/AP) SEATTLE - Steven Powell, the father-in-law of a missing Utah woman Susan Powell, is expected to be released from a Washington prison next month. His release would come less than a year after he was sentenced to 2 1/2 years for recording images of two neighbor girls in their bathroom.

Washington state Corrections Department spokesman Chad Lewis tells KING-TV that Steven Powell will be released May 23 from the Monroe Correctional Complex. He began his sentence last June 19.

Lewis says most offenders can get time subtracted from their original sentence for good behavior and meeting other criteria.

Susan Powell disappeared from her Utah home in 2009. Her husband, Josh, was a focus of the investigation until he killed himself and the couple's two children in February 2012. Steven Powell was arrested after authorities investigating Susan Powell's disappearance searched his home.

Complete coverage of the Susan Powell case on Crimesider

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