  Charged lepton flavor violation is forbidden in the Standard Model but
possible in several new physics scenarios. In many of these models, the
radiative decays $\tau^{\pm}\rightarrow\ell^{\pm}\gamma$ ($\ell=e,\mu$) are
predicted to have a sizeable probability, making them particularly interesting
channels to search at various experiments. An updated search via
$\tau^{\pm}\rightarrow\ell^{\pm}\gamma$ using full data of the Belle
experiment, corresponding to an integrated luminosity of 988 fb$^{-1}$, is
reported for charged lepton flavor violation. No significant excess over
background predictions from the Standard Model is observed, and the upper
limits on the branching fractions, $\mathcal{B}(\tau^{\pm}\rightarrow
\mu^{\pm}\gamma)$ $\leq$ $4.2\times10^{-8}$ and
$\mathcal{B}(\tau^{\pm}\rightarrow e^{\pm}\gamma)$ $\leq$ $5.6\times10^{-8}$,
are set at 90\% confidence level.
