Tom Clancy, the bestselling author whose works were the basis for countless film and video game adaptations, has died at age 66, The New York Times' Julie Boseman reports.

Clancy's dozens of novels defined the techno-thriller genre, combining political intrigue and action with highly detailed explanations of ships, weapons, and military tactics. His best-known hero, Jack Ryan, foiled endless international plots and was immortalized in films like The Hunt for Red October. Rainbow Six, another Jack Ryan novel, became one of the top-selling game franchises of all time, and his Splinter Cell series saw the release of its latest installment in August.

Little more is known about Clancy's death at this point, though it has been confirmed by his publisher.