GRAND RAPIDS, MI – A Kent County man was arrested in early June after he allegedly possessed 32,000 images of child pornography, and advertised on the Internet in an effort to grow his collection, federal authorities say.

Police later found other disturbing evidence: He talked about a sexual relationship with a 12-year-old boy, and shared a 150-page manifesto on finding and molesting children without anyone finding out, the government said in court documents.

Jeffrey Victor Marchione is charged with advertising material involving the sexual exploitation of children, possession of child pornography and two counts of distribution of child pornography.

He had been free on bond until prosecutors filed a superseding indictment this week.

He was arraigned Thursday, July 11, and ordered held pending a detention hearing Tuesday in U.S. District Court in Grand Rapids. Prosecutors have asked bond be revoked pending trial.

Prosecutors say he poses a danger to children, and should be locked up.

“The extensive chat history discovered through the forensic examination reveals the defendant told another person that he, the defendant, has had sexual contact with a 12-year-old in the past, that he is afraid of being caught, and that he is sexually interested in general in teen-age boys,” Assistant U.S. Attorney Tessa Hessmiller wrote.

She said chat logs also showed Marchione shared a manifesto on molesting children without getting caught.

“The document instructs people, specifically men, to become mentors, coaches or counselors in their local community to find a child to molest. The chat history reveals that the defendant told the person to whom he sent this document that he should become a Boy Scout leader or tutor to find a child to molest.

“The document instructs its readers to begin their grooming and molestation when the child is approximately 5 years old,” Hessmiller wrote.

The government said Marchione used an Internet-based peer-to-peer file-sharing program to advertise images and videos of children engaged in sexually explicit conduct. He had a collection of 32,376 images and 1,580 videos, the indictment said.

The government obtained Jan. 8, 2012, blog postings to contacts on his peer-to-peer network. Marchione allegedly wrote that he would leave his computer on for the weekend, and at night during the week, for others to share his images and videos.

“I do have a few files that I do not share with everyone (but) if you are a good sharer, I will open all of them to you. If you want to see any of my files, you have to have some yourself and share them! Too many people here take and run! I have over 15g of good quality vides and pics, so if (your’re) fair, I will be fair!

In an exchange with another user, Marchione was asked if he had good videos of boys ages 13 to 15 having sex.

Marchione allegedly said he believed so, then, a couple days later, told the user: “I moved you in to my trusted group and you can see my new downloads folder now. Thanks for sharing so generously!”

“The defendant’s advertising campaign focused on growing his collection of sexually explicit images of children and included, but not limited to, one or more of the following strategies: developing a wide base of contacts on the peer-to-peer file-sharing network, providing his contacts with access to his collection, asking his contacts to recommend him to others, providing preferred contacts with more exclusive access, and revoking access by less desirable contacts,” Hessmiller wrote in the indictment.

Marchione told another user that his “aoa,” or “area of attraction,” was boys, ages 10 to 14, the indictment said. After he shared with a user seeking “boylove,” Marchione allegedly wrote, “Thanks you too. plenty to share. help yourself enjoy.”

E-mail John Agar: jagar@mlive.com and follow him on Twitter at twitter.com/ReporterJAgar