  We prove that for a three-qubit system in the Greenberger-Horne-Zeilinger
(GHZ) state, locality per se is in conflict with the perfect GHZ correlations.
The proof does not in any way use the realism assumption and can lead to a
refutation of locality. We also provide inequalities that are imposed by
locality. The experimental confirmation of the present reasoning may imply a
genuine quantum nonlocality and will deepen our understanding of nonlocality of
nature.
