UPDATE: Prosecutors intend to fight his suppression motion and are confident the evidence will remain admissible, Pierce County Prosecutor Mark Lindquist said this afternoon.

“This is a case where law enforcement was especially meticulous,” Lindquist said. “They did things by the book.”

Lindquist said deputies searching for evidence in Susan Powell’s disappearance found the photographs and went back and got a second warrant to seize them.

PREVIOUS POST: Josh Powell’s father claims in newly filed court documents that Pierce County authorities illegally searched his house last year.

Steven Powell wants evidence seized during that search, including photos he allegedly took of young girls and his daughter-in-law, Susan Cox Powell, thrown out of court.

The subjects were naked or semi-nude in many of the photos and likely did not know they were being photographed, prosecutors allege in court papers.

If Powell were successful, prosecutors likely would be forced to dismiss the 14 counts of voyeurism and one count of possession of child pornography with which he’s charged.

Deputy prosecutors did not immediately return calls seeking comment this afternoon, but they are sure to fight to have the evidence remain admissible against the elder Powell, whose son killed his two young sons and himself last month.

You can read more about the case against Steve Powell here.