  The semileptonic $\Omega_c^0 \rightarrow \Omega^- l \nu$ and non-leptonic
$\Omega_c^0 \to \Omega^- \pi^+$, $\Omega_c^0 \to \Omega^- \rho^+$ decays of
charmed $\Omega_c$ baryon are studied within the light cone sum rules. The form
factors responsible for $\Omega_c \to \Omega$ transitions are calculated using
the distribution amplitudes of $\Omega_c$ baryon. With the obtained form
factors, the branching ratios of $\Omega_c^0 \to \Omega^- l^+ \nu_l$,
$\Omega_c^0 \rightarrow \Omega^- \pi^+$, and $\Omega_c^0 \rightarrow \Omega^-
\rho^+$ decays are estimated. The results are compared with Belle data as well
as the findings of the other approaches.
