NEW YORK (CNN/Money) - For those unwilling to lug around the 870-page "Harry Potter and the Order of the Phoenix," there's now another way to read the fifth book in the J.K. Rowling series -- by downloading it from the Internet.

Rowling's latest novel about the boy wizard has popped up on all of the various file-sharing networks in a variety of formats, including Adobe's PDF and Microsoft's LIT, according to a Monday report in the New York Times.

Rowling has not authorized publication of the book online and her literary agency is contacting various Internet service providers to ask that the files be removed, her agent told the paper.

"E-book rights are reserved to J.K. Rowling," agent Neil Blair told the Times. "So any Harry Potter novels on the Net are unauthorized. We also have an obligation to protect the children who might believe they are reading the official work."

Blair added that Rowling has no plans to publish an authorized edition online, and he does not expect that illegal copies will impact sales of the printed editions, the paper reported.

"Harry Potter and the Order of the Phoenix" is published by New York-based Scholastic Corp. (SCHL: up $0.32 to $27.60, Research, Estimates) and is currently No. 1 on the children's best-seller list.