A publicist for Rod Blagojevich (blah-GOY'-uh-vich) says the former Illinois governor plans to write a book "exposing the dark side of politics."

Glenn Selig says Blagojevich signed a six-figure deal Monday.

Selig says the book also will detail how Blagojevich selected President Barack Obama's successor in the U.S. Senate.

Blagojevich was impeached and removed from office following his arrest on federal charges that include allegations included he tried to sell the Senate seat. He denies wrongdoing.

Selig says Blagojevich's book will tell the truth and will reveal information "that will at times be embarrassing to himself as well as to others."

Selig says Blagojevich's book will be published by Phoenix Books and released in October.