The admiral who heads the U.S. Naval Special Warfare Command says details in a new book about the raid that killed Osama bin Laden could provide enemies with some dangerous insight into the way the Navy SEALs operate.

The admiral, in a letter to the roughly 8,000 service members under his command, says selling details about SEAL training and operations puts the force at risk.

FULL COVERAGE: Pentagon Investigates Navy SEAL Book

The Pentagon, meanwhile, says the insider account of the bin Laden raid from the former SEAL contains classified information that should have been submitted for review. Pentagon press secretary George Little told reporters that an official review of the book, "No Easy Day," determined that it reveals what he called "sensitive and classified" information. He was not more specific.

Little would not say what damage may result from the book's revelations.

A lawyer for the author, Matt Bissonnette, has disputed that he was legally obligated to have the book screened before publication.

(Copyright 2012 by The Associated Press.  All Rights Reserved.)