Brad Pitt is officially attached to star in an adaptation of World War Z, Max Brooks' bestselling post-apocalyptic horror novel. Paramount Pictures is reportedly eyeing a summer 2012 release.

The confirmation comes from the floor of Comic-Con International in San Diego, where the author told MTV News that Paramount also has optioned the film rights to his earlier book The Zombie Survival Guide and his 2009 graphic novel The Zombie Survival Guide: Recorded Attacks.

Published in 2006, World War Z uses first-hand accounts of survivors to chronicle a worldwide zombie plague that threatens to wipe out civilization.

The novel was optioned in 2007 by Pitt's Plan B Entertainment following a bidding war with Leonardo DiCaprio's production company Appian Way. The initial screenplay was written by J. Michael Straczynski, but last year Matthew Michael Carnahan (The Kingdom) was brought in for a rewrite. Brooks tells MTV that Marc Forster (Quantum of Solace) is still attached to direct.

Brooks, whose Recorded Attacks was published through a partnership between Random House and Avatar Press, will be signing at the Avatar booth (#2701) throughout Comic-Con.