A Washington state judge on Wednesday will determine custody arrangements for the 4- and 6-year-old sons of missing Utah mother Susan Powell, as the boys are currently staying with their maternal grandparents after their father was linked to accusations of child pornography and voyeurism.

As RadarOnline.com previously reported, Susan Powell, 30, was last seen at her West Valley City home December 7, 2009; her husband Josh is the only person police have identified as a “person of interest” in the case.

Last week, the boys were removed from the Puyallup, Washington home Josh shared with his father Steve, after Steve was arrested in connection with voyeurism and possession of child pornography. (Assistant attorney general John Long said in court Tuesday that Josh is a subject in his father's investigation, though Josh said he had "nothing to do" with it.)

Steven Powell -- the father-in-law of missing Utah woman Susan Powell -- will face a judge Friday, a day after being charged with voyeurism and possession of child pornography after police came across thousands of images of women at his home, including video of Susan.

Steven Powell, 61, was arrested at his home in Puyallup, Washington Thursday. He will be arraigned Friday in Superior Court.

Powell is charged with 14 felony counts of voyeurism and one count of possession of child pornography. Authorities said they found "thousands of images of females being videotaped without their knowledge, including Susan Powell," on tapes and discs seized from his home during an August 25 search as part of their investigation into her mysterious disappearance nearly two years ago.

In response to conflicting reports earlier this week, authorities in Utah Friday said no human remains have been recovered in the desert search for missing mother-of-two Susan Powell.

"The dogs are still smelling something, but we have not come across bones; we have not come across clothing," police Lieutenant Bill Merritt told the Salt Lake Tribune Thursday night. Police said specially-trained dogs have been scanning the Utah region, giving off a strong indication there are human remains on the premises.

Police said they will continue excavating a presumed grave area located about 30 miles from the campground her husband claims he was at with their children at the time she vanished. Powell’s father will be present for the dig.