The book "No Easy Day" by former Navy SEAL Matt Bissonnette, using the pseudonym Mark Owen, will be released next week, a week earlier than anticipated.
He claims that bin Laden may have been shot as he peered out of a bedroom doorway, though the book does not make clear who fired the shots. Bissonnette said he was directly behind the point man while going up the stairs in the pitch black hallway.
Bissonnette says he saw a man duck back into his bedroom and the SEALs followed, only to find the man crumpled on the floor in a pool of blood with a hole visible on the right side of his head and two women wailing over his body. Once they wiped the blood off his face, they were certain it was bin Laden.
Bissonnette says the point man pulled the two women out of the way and shoved them into a corner. He and the other SEALs trained their guns' laser sights on bin Laden's still-twitching body, shooting him several times until he lay motionless. The SEALs later found two weapons stored by the doorway, untouched, the author said.
The administration has said the SEALs shot bin Laden after he ducked back into the room, because they thought he might be reaching for a weapon.
White House officials have not commented on the contradiction.
The Associated Press contributed to this report.