  We investigate the chiral phase transition of the strongly interacting matter
at nonzero temperature and baryon chemical potential $\mu_B$ within an extended
(2+1) flavor Polyakov constituent quark-meson model which incorporates the
effect of the vector and axial vector mesons. The parameters of the model are
determined by comparing masses and tree-level decay widths with experimental
values. We examine the restoration of the chiral symmetry by monitoring the
temperature evolution of condensates. We study the $T-\rho_B$ phase diagram of
the model and find that a critical end point exists, although at very low
density.
