By . Daily Mail Reporter . Last updated at 7:26 AM on 25th September 2011 . Chuck Cox, the father of missing Utah mother Susan Powell, said today that the child pornography charges filed against her father-in-law make it clear he is a liar. Steven Powell, 61, was arrested yesterday after police discovered thousands of images of women and young girls videotaped without their knowledge, including some of his daughter-in-law. Mr Cox said the discovery categorically shows that Powell's claims the 28-year-old mother of two was 'very sexual' with him were lies. Mugshot: Steven Powell, the father-in-law of missing Utah woman Susan Powell is shown. He pleaded not guilty to voyeurism and possession of child pornography . 'I do think it vindicates my . daughter, and what we've said about her and it clearly shows that he had . motive to detract from her reputation,' Mr Cox said on Good Morning . America. Susan's husband, Josh, is the lone . person of interest in the woman's December 2009 disappearance, and the . case has created a bitter rift between the two families, with a custody . battle for the couple's two sons raging. It was announced today that the boys, ages four and six, are in foster care after Powell was arraigned child porn and voyeurism charges on Friday. He entered a plea of not guilty. The children had been living at their paternal grandfather's home with their father since their mother vanished. Court battle: Susan Powell's father, Chuck Cox, filed for custody of her kids on Friday . Powell was arrested after . police investigating Susan Powell's disappearance came across thousands . of images of women videotaped without their knowledge, including some of . his daughter-in-law. Wearing an orange jailhouse jumpsuit . and with his hands cuffed he entered not guilty pleas in court in . Washington state on Friday, and the judge set bail at $200,000. The judge at Powell's arraignment ordered him not to have contact with his grandsons. A court commissioner said on Friday . that he will not decide on the custody of the sons until after the . state's child welfare agency finishes its investigation. Another hearing . is scheduled for Wednesday. Charged: Steven Powell, the father-in-law of missing Utah woman Susan Powell, appears in Pierce County courtroom on Friday in Tacoma, Washington . Mr Cox said after the hearing: 'We're very concerned for the welfare of our grandchildren. We're doing everything we can.' The arrest - and the child custody . motion - are the latest twists in a case that has perplexed Utah police, . who are on their 12th day of searching a remote stretch of desert near . where Josh Powell says he went camping the night his wife vanished. Prosecutor Mark Lindquist in . Washington state said Steven Powell is charged with 14 felony counts of . voyeurism and one count of possession of child pornography. Lindquist said Utah police . investigating Susan Powell's disappearance found 'thousands of images of . females being videotaped without their knowledge, including Susan . Powell,' on tapes and disks at his home in an August 25 search. Accused: Steven Powell, 61, was arrested last night at his Washington home on child porn and voyeurism charges after thousands of images were found . The videos were found in Steven . Powell's bedroom. Lindquist said in a statement: 'The photographer . focuses on the women's buttocks, breasts. Many images were of minor . females.' The images included shots of two girls . who were as young as eight and ten years old at the time, the . prosecutor said. Authorities determined that the girls lived near Steven . Powell from June 2006 to August 2007. At Powell's arraignment, prosecutor . Grant Blinn said detectives are still going through the seized items, . but so far have found more than 1,000 video files. He said it appeared . he had been secretly videotaping girls or women for at least ten years. The arrest prompted a Cox family . lawyer to directly accuse Josh - for the first time publicly - of . involvement in his wife's disappearance. Missing: Susan Powell, 28 and a mother of two, has not been seen since 2009. Her arrested father-in-law Steven said he had a 'sexual relationship' with her . 'The time has come where we have to . stop playing cat and mouse games: Josh Powell had something to do with . the disappearance of the mother of these children,' attorney Steve . Downing told the court commissioner on Friday. Powell responded: 'Everything they said is patently false. I am a good father to my sons.' Before the hearing, he sat in the back . row of the small courtroom wearing a blue jacket, jeans, white sneakers . with the treads worn off - and his wedding ring. Powell flipped through a thick stack . of legal documents and told a reporter 'no' when asked if he had . anything to say about his dad's arrest. He ignored several other . questions. Handcuffed: Steven Powell is led away by a police officer following his arrest in Washingon last night . Susan Powell's father called the . allegations against Steven Powell disgusting. 'It very clearly shows her . concerns were just about Steven Powell,' Chuck Cox said. Police have said Josh Powell has been uncooperative in their investigation. Josh Powell claims he took the . couple's two sons - then ages four and two - on a midnight camping trip . in the mountains west of Salt Lake City on December 6, 2009, the night . before she was reported missing. Also on Friday, a Washington state judge . issued a permanent injunction barring Josh Powell and his father from . further publishing journal pages Susan Powell wrote as a teenager. Raised eyebrows: Steven Powell went on record last month to say Susan was promiscuous and used to make him smell her hair . The Powells claimed the journal . entries depicted a troubled woman, but Susan's family has been fighting . their release, saying they were the personal writings of a young girl . and had no bearing on her disappearance. Authorities planned to wrap up their . 12-day search of the desert Friday about 30 miles from where Josh Powell . said he went camping that night. At one point, they said they found a . 'shallow grave' after cadaver dogs alerted them to the spot. But they found no human remains. Charred wood chips discovered in the hole have been sent to a lab for testing. The search of the Powells home in . Puyallup, Washington, last month came after police wrapped up a search . for evidence in a network of abandoned mines outside Ely, Nevada. Husband: Josh Powell, Susan's husband and Steven's son, is still the only person of interest in his wife's missing persons case . Around that time in August, Josh . Powell and his father went on national television to discuss the case. They claimed Susan Powell was promiscuous, emotionally unstable and . suicidal, a claim her family denies. Steven Powell said he had a flirtatious relationship with his daughter-in-law and believed they were in love. 'Susan was very sexual with me,' Steve . Powell told ABC's Good Morning America. 'We interacted in a lot of . sexual ways because Susan enjoys doing that.' Cox, Susan's father, denied the allegations, and said it was Steven Powell who initiated unwanted sexual advances. Two years: Susan Powell was reported missing from her Utah home on December 7, 2009 . Search: Investigators found a shallow grave while searching a site in the desert earlier this month . Josh Powell has denied killing his . wife or having anything to do with her disappearance. 'I would never . even hurt her,' a tearful, red-eyed Josh Powell told CBS' Early Show in . August. Josh and his father have said they believe Susan Powell ran off with another man. 'I'm still thinking she left,' Steven . Powell told The Associated Press in August. 'Hopefully they'll be able . to find her at some point... We don't believe she's dead.'
Chuck Cox says Steven Powell lied about relationship .
Powell arrested after photos found of young girls found .
Hoard included shots of his daughter-in-law too .
Custody battle over two children rages .
Susan Powell has not been seen since 2009 .
By . Daily Mail Reporter . Last updated at 7:26 AM on 25th September 2011 . Chuck Cox, the father of missing Utah mother Susan Powell, said today that the child pornography charges filed against her father-in-law make it clear he is a liar. Steven Powell, 61, was arrested yesterday after police discovered thousands of images of women and young girls videotaped without their knowledge, including some of his daughter-in-law. Mr Cox said the discovery categorically shows that Powell's claims the 28-year-old mother of two was 'very sexual' with him were lies. Mugshot: Steven Powell, the father-in-law of missing Utah woman Susan Powell is shown. He pleaded not guilty to voyeurism and possession of child pornography . 'I do think it vindicates my . daughter, and what we've said about her and it clearly shows that he had . motive to detract from her reputation,' Mr Cox said on Good Morning . America. Susan's husband, Josh, is the lone . person of interest in the woman's December 2009 disappearance, and the . case has created a bitter rift between the two families, with a custody . battle for the couple's two sons raging. It was announced today that the boys, ages four and six, are in foster care after Powell was arraigned child porn and voyeurism charges on Friday. He entered a plea of not guilty. The children had been living at their paternal grandfather's home with their father since their mother vanished. Court battle: Susan Powell's father, Chuck Cox, filed for custody of her kids on Friday . Powell was arrested after . police investigating Susan Powell's disappearance came across thousands . of images of women videotaped without their knowledge, including some of . his daughter-in-law. Wearing an orange jailhouse jumpsuit . and with his hands cuffed he entered not guilty pleas in court in . Washington state on Friday, and the judge set bail at $200,000. The judge at Powell's arraignment ordered him not to have contact with his grandsons. A court commissioner said on Friday . that he will not decide on the custody of the sons until after the . state's child welfare agency finishes its investigation. Another hearing . is scheduled for Wednesday. Charged: Steven Powell, the father-in-law of missing Utah woman Susan Powell, appears in Pierce County courtroom on Friday in Tacoma, Washington . Mr Cox said after the hearing: 'We're very concerned for the welfare of our grandchildren. We're doing everything we can.' The arrest - and the child custody . motion - are the latest twists in a case that has perplexed Utah police, . who are on their 12th day of searching a remote stretch of desert near . where Josh Powell says he went camping the night his wife vanished. Prosecutor Mark Lindquist in . Washington state said Steven Powell is charged with 14 felony counts of . voyeurism and one count of possession of child pornography. Lindquist said Utah police . investigating Susan Powell's disappearance found 'thousands of images of . females being videotaped without their knowledge, including Susan . Powell,' on tapes and disks at his home in an August 25 search. Accused: Steven Powell, 61, was arrested last night at his Washington home on child porn and voyeurism charges after thousands of images were found . The videos were found in Steven . Powell's bedroom. Lindquist said in a statement: 'The photographer . focuses on the women's buttocks, breasts. Many images were of minor . females.' The images included shots of two girls . who were as young as eight and ten years old at the time, the . prosecutor said. Authorities determined that the girls lived near Steven . Powell from June 2006 to August 2007. At Powell's arraignment, prosecutor . Grant Blinn said detectives are still going through the seized items, . but so far have found more than 1,000 video files. He said it appeared . he had been secretly videotaping girls or women for at least ten years. The arrest prompted a Cox family . lawyer to directly accuse Josh - for the first time publicly - of . involvement in his wife's disappearance. Missing: Susan Powell, 28 and a mother of two, has not been seen since 2009. Her arrested father-in-law Steven said he had a 'sexual relationship' with her . 'The time has come where we have to . stop playing cat and mouse games: Josh Powell had something to do with . the disappearance of the mother of these children,' attorney Steve . Downing told the court commissioner on Friday. Powell responded: 'Everything they said is patently false. I am a good father to my sons.' Before the hearing, he sat in the back . row of the small courtroom wearing a blue jacket, jeans, white sneakers . with the treads worn off - and his wedding ring. Powell flipped through a thick stack . of legal documents and told a reporter 'no' when asked if he had . anything to say about his dad's arrest. He ignored several other . questions. Handcuffed: Steven Powell is led away by a police officer following his arrest in Washingon last night . Susan Powell's father called the . allegations against Steven Powell disgusting. 'It very clearly shows her . concerns were just about Steven Powell,' Chuck Cox said. Police have said Josh Powell has been uncooperative in their investigation. Josh Powell claims he took the . couple's two sons - then ages four and two - on a midnight camping trip . in the mountains west of Salt Lake City on December 6, 2009, the night . before she was reported missing. Also on Friday, a Washington state judge . issued a permanent injunction barring Josh Powell and his father from . further publishing journal pages Susan Powell wrote as a teenager. Raised eyebrows: Steven Powell went on record last month to say Susan was promiscuous and used to make him smell her hair . The Powells claimed the journal . entries depicted a troubled woman, but Susan's family has been fighting . their release, saying they were the personal writings of a young girl . and had no bearing on her disappearance. Authorities planned to wrap up their . 12-day search of the desert Friday about 30 miles from where Josh Powell . said he went camping that night. At one point, they said they found a . 'shallow grave' after cadaver dogs alerted them to the spot. But they found no human remains. Charred wood chips discovered in the hole have been sent to a lab for testing. The search of the Powells home in . Puyallup, Washington, last month came after police wrapped up a search . for evidence in a network of abandoned mines outside Ely, Nevada. Husband: Josh Powell, Susan's husband and Steven's son, is still the only person of interest in his wife's missing persons case . Around that time in August, Josh . Powell and his father went on national television to discuss the case. They claimed Susan Powell was promiscuous, emotionally unstable and . suicidal, a claim her family denies. Steven Powell said he had a flirtatious relationship with his daughter-in-law and believed they were in love. 'Susan was very sexual with me,' Steve . Powell told ABC's Good Morning America. 'We interacted in a lot of . sexual ways because Susan enjoys doing that.' Cox, Susan's father, denied the allegations, and said it was Steven Powell who initiated unwanted sexual advances. Two years: Susan Powell was reported missing from her Utah home on December 7, 2009 . Search: Investigators found a shallow grave while searching a site in the desert earlier this month . Josh Powell has denied killing his . wife or having anything to do with her disappearance. 'I would never . even hurt her,' a tearful, red-eyed Josh Powell told CBS' Early Show in . August. Josh and his father have said they believe Susan Powell ran off with another man. 'I'm still thinking she left,' Steven . Powell told The Associated Press in August. 'Hopefully they'll be able . to find her at some point... We don't believe she's dead.'
including some of his daughter-in-law. Mr Cox her kids on Friday . Powell was arrested after . investigating Susan Powell's disappearance found shots of two girls . who were as young as eight mother of two, has not been seen since 2009. Her Steven Powell,' Chuck Cox said. Police have said