President Obama was overheard bragging to administration aides about his ability to kill people with drones, a new book about the 2012 campaign season that’s due for release on Tuesday claimed.

The president’s specific words: I’m “really good at killing people,” authors Mark Halperin and John Heilemann write in “Double Down: Game Change 2012,” The Daily Mail reported. They get their claim from a Washington Post report that buries the statement as a brief anecdote in an article, in which the president is described as speaking to aides about the drone program and then making the claim.

The White House hasn’t responded to the book — but a spokesman did indicated on Sunday talk shows that the president hates information leaks.

“I haven’t talked to him about the book,” said adviser Dan Pfeiffer on ABC’s “This Week” on Sunday. “I haven’t read it. He hasn’t read it. But he hates leaks.”