Author Tom Clancy is dead at the age of 66.
Clancy's publisher, Penguin Group, confirmed on Wednesday morning that the author of many popular novels including "The Hunt for Red October" and "The Sum of All Fears" died on Monday, Oct. 1, 2013.
His cause of death has yet to be made public, but MSNBC states that he died in at John Hopkins Hospital in Maryland after a brief illness.
"I'm deeply saddened by Tom's passing. He was a consummate author, creating the modern-day thriller, and was one of the most visionary storytellers of our time. I will miss him dearly and he will be missed by tens of millions of readers worldwide." - David Shanks, Penguin Group.
Clancy's cause of death has yet to be made public.
Born in Baltimore, Clancy was a former insurance agent turned best-selling author. In his lifetime, he published 28 books, including a new novel, "Command Authority" scheduled for December publication.
Several of Tom Clancy's novels were made into movies that were blockbusters at the theater, including "Patriot Games," "The Hunt for Red October," and "The Sum of All Fears."
Of the 28 novels he wrote, 17 made it to the New York Times best-sellers list.
Clancy's main character, Jack Ryan, starred in 12 of his books. Ryan's character was portrayed on the silver screen by famous Hollywood actors including Harrison Ford, Alec Baldwin, and Ben Affleck.