Missing woman's husband, Josh Powell, denied custody of sons over sexual images on his computer

(CBS/KIRO) TACOMA, Wash. - The children of missing Utah mother Susan Cox Powell will remain in the custody of her parents as new allegations against their father emerge.

Pictures: Missing Utah mother Susan Powell

According to CBS affiliate KIRO, sexually explicit images were found on a home computer that belongs to Josh Powell. 

On Wednesday, a judge ruled that Powell must undergo a psycho-sexual evaluation and a lie detector test, noting the "extreme child porn" found in the home where Josh was living with the two boys and his parents after his wife's disappearance.

Susan Powell has been missing since 2009 and the couple's two sons have been in the custody of her parents, although Powell is allowed supervised visits several times a week.

"We're relieved that the children will be with us, for now," said Chuck Cox, Susan's father.

Powell's attorney says that the images found on his client's computer were not illegal, but rather "in poor taste."

Last September, Powell's father, Steve Powell, was arrested on child pornography charges. The Associated Press reported that papers from Steve Powell's 1992 divorce indicated that child porn was a factor in the breakup of his marriage.

Complete coverage of the Susan Powell case on Crimesider