(CNN) -- The man behind a controversial book considered a "how-to" guide for pedophiles was arrested in Colorado, officials in Florida said Monday.

"You cannot engage or depict children in a harmful relationship," said Polk County, Florida, Sheriff Grady Judd as he described the Florida obscenity statute that officials used to charge Phillip Greaves with distribution of obscene material depicting minors engaged in harmful conduct.

The self-published author was arrested in Pueblo, Colorado, on a Florida felony warrant after undercover detectives in Polk County purchased and received a copy of the book through the mail. He will have to be extradited to Florida to face charges.

Judd said the book was Greaves' last copy, which he autographed before sending out.

Greaves and his book, "The Pedophile's Guide to Love and Pleasure: A Child-Lover's Code of Conduct," gained national attention earlier this year after Amazon.com defended selling the book on its website despite angry comments and threats of boycotts from thousands of users.

Amazon pulled the book from its site in early November.

"He actually provided a how-to guide to commit sexual battery against children," according to Judd, who said he was shocked and mortified by specific examples and illustrations using 9- and 13-year-old boys.

Judd said he was frustrated that Greaves' book was protected under freedom of speech laws, even though it was created "specifically to teach people how to sexually molest and rape children."

"There may be nothing that the other 49 states can do, but there is something that the state of Florida can do ... to make sure we prosecute Philip Greaves for his manifesto," Judd said.

Officials said the book talked about safe sex and avoiding injury to children, grooming and preparing children for sex, and teaching children how to lie to their parents.

Judd said Greaves' book outlined a "code of ethics" that showed pedophiles how to look for the most vulnerable children.

"The message is very clear: If you write a book, if you sell that book, if you transmit that book to anyone in our jurisdiction, then we will investigate you and arrest, because our goal is protect the children," the sheriff said.