  We propose a simple unfolded description of free massive higher spin
particles in anti-de-Sitter spacetime. While our unfolded equation of motion
has the standard form of a covariant constancy condition, our formulation
differs from the standard one in that our field takes values in a different
internal space, which for us is simply a unitary irreducible representation of
the symmetry group. Our main result is the explicit construction, for the case
of AdS$_3$, of a map from our formulation to the standard wave equations for
massive higher spin particles, as well as to the unfolded description prevalent
in the literature. It is hoped that our formulation may be used to clarify the
group-theoretic content of interactions in higher spin theories.
