CNN — A book company said Wednesday it will release on September 11 a firsthand account of the raid that killed al Qaeda leader Osama bin Laden.

Christine Ball, director of marketing and publicity for Dutton, a subsidiary of Penguin Group USA, told CNN the book was written by a Navy SEAL under a pen name.

The book is entitled: "No Easy Day: The Firsthand Account of the Mission That Killed Osama bin Laden."