Amber Hardman/Polaris

The father-in-law of missing Utah mom Susan Powell had thousands of secretly snapped pictures of her stored on his computer and storage devices.

Nearly 4,500 images of Susan, including close-ups of her breasts and buttocks, were stored on the computer, according to the Associated Press, which obtained them under an open records request this week.

Numerous photos of Susan's groin and face were stored in files titled "SMP" on storage disks, according to court documents obtained by ABC News.

The images were found during a search of the home that Stephen Powell and his son Josh Powell shared after Susan disappeared in 2009.

The search also yielded images of two young girls, Stephen Powell's neighbors, who were photographed without their knowledge by Stephen while using the bathroom. Powell was found guilty of voyeurism for the photos of the young girls.

Prosecutors entered photos of the girls into evidence, as well as journal entries Stephen Powell had written about sexual fantasies he had of his daughter-in-law.

Grant Blinn, who prosecuted the case for Pierce County, Wash., confirmed the images' existence to ABC News.

Neither Stephen nor Josh Powell were charged in connection with Susan's disappearance. Josh was named a person of interest in the case, but killed himself and the couple's children in a fiery home explosion in 2009.

Josh Powell had been ordered to undergo psychosexual evaluations in order to win custody of his sons back, after they were removed from his care because of the sexual content found in the Powell home during the police search.