Washington (CNN) -- The Pentagon general counsel threatened legal action Thursday against a former Navy SEAL who wrote a revealing book about last year's Osama bin Laden raid, warning him he has violated secrecy agreements and broken federal law. 

In a letter addressed to "Mark Owen," the pen name of book author Matt Bissonnette, General Counsel Jeh Charles Johnson wrote the Pentagon is considering pursuing "all remedies legally available" against the former SEAL and his publisher, Penguin Putnam. 

"In the judgment of the Department of Defense, you are in material breach and violation of the nondisclosure agreements you signed. Further public dissemination of your book will aggravate your breach and violation of your agreements," Johnson wrote. 

The book is called "No Easy Day" and is a gripping account of the Navy SEAL raid on bin Laden's compound in Pakistan last year that ended in the death of the world's most notorious terrorist leader. 

The story sheds more light on the now famous skill and daring of the SEALs. But the book's very existence stoked controversy because members of the elite unit don't usually divulge details of their operations. 

The book is one of several accounts about the operation to have surfaced after last year's raid. 

Buzz ramps up over SEAL's bin Laden book 

Government officials only recently became aware the former SEAL was writing a book, but they were told it encompassed more than just the raid and included vignettes from training and other missions. 

They wanted to see a copy, a Defense Department official said, to make sure no classified information would be released and to see if the book contained any information that might identify other team members. 
What is the name of the book in question?
What is the pen name on the book?
And the real author's name?
Who threatened him with legal action?
For violating what?
What raid is the book about?
What was Bissonette's former job?
Where did the raid on Bin Laden take place?
What happened to Bin Laden during that incident?
Was the book controversial?
Why?
Is there more than one account of the incident?
What's one reason the government wanted to see the book before it was released?
And what else
Who was considering going after him with all remedies legally available?
Were they only after Bissonnette?
Who else were they pursuing?
Which is?
Did Bissonnette sign a nondisclosure agreement?
What did the Department of Defense say further sales of the book would aggravate?
No Easy Day
No Easy Day
Mark Owen
Mark Owen
Matt Bissonnette
Matt Bissonnette
the Department of Defense
the Department of Defense
the nondisclosure agreements he signed
the nondisclosure agreements you signed
last year's Osama bin Laden raid
last year's Osama bin Laden raid
Navy SEAL
Navy SEAL
in Pakistan
 in Pakistan
in his death
in the death
yes
But the book's very existence stoked controversy because members of the elite unit don't usually divulge details of their operations. 
members of the elite unit don't usually divulge details
members of the elite unit don't usually divulge details
yes
The book is one of several accounts about the operation to have surfaced after last year's raid. 
to make sure no classified information would be released
to make sure no classified information would be released
to see if the book contained any information that might identify other team members.
to see if the book contained any information that might identify other team members.
General Counsel Jeh Charles Johnson
General Counsel Jeh Charles Johnson
no
 Pentagon is considering pursuing "all remedies legally available" against the former SEAL and his publisher, Penguin Putnam. 

his publisher
his publisher
Penguin Putnam
Penguin Putnam
yes
"In the judgment of the Department of Defense, you are in material breach and violation of the nondisclosure agreements you signed
breach and violation of his agreements
breach and violation of your agreements