  Conformally flat pseudo-Riemannian manifolds with generalized Ricci
recurrent, $(GR)_n$ structure are completely classified in this short report. A
conformally flat generalized Ricci recurrent pseudo-Riemannian manifold is
shown to be either a de Sitter space or an anti-de Sitter space. In particular,
a conformally flat generalized Ricci recurrent spacetime must be either a de
Sitter spacetime or an anti-de Sitter spacetime.
