  We evaluate a 5-dimensional Randall Sundrum type metric in the Lagrangian of
the Einstein-Chern-Simons gravity, and then we derive an action and its
corresponding field equations, for a 4-dimensional brane embedded in the
5-dimensional space-time of the theory, which in the limit l--0 leads to the
4-dimensional general relativity with cosmological constant. An interpretation
of the h*a matter field present in the Einstein-Chern-Simons gravity action is
given. As an application, we find some Friedmann-Lemaitre-Robertson-Walker
cosmological solutions that exhibit accelerated behavior.
