  In this report, we discuss the dynamics of photons in a five-dimensional
Schwarzschild black hole. We find that the corresponding
Eddington-Finkelstein-like coordinate admits two time-coordinate singularities
for a particular condition. This condition is due to the existence of a
non-zero angular momentum related to the extra spatial dimension. By
introducing a new Regge-Wheeler tortoise coordinate, both singularities can be
removed from the Eddington-Finkelstein-like coordinate. It is identified that
the additional singularity is related to the photon sphere in a hyperplane, and
we analyze it using a dynamical system approach. Simulation results of photon
motion based on numerical calculation are presented. It is suggested that the
related bending motion characteristic can probably be considered as a signature
for probing the existence of the extra spatial dimension.
