  The search for CP-violating K_S\to3\pi^0 decay was performed with SND
detector at VEPP-2M e^+e^- collider. The total amount of data corresponding to
7 million produced K_S mesons was analyzed. No candidate events were found,
giving an upper limit of the decay branching ratio: Br(K_S\to3\pi^0) <
1.4\cdot10^{-5} at 90% confidence level.
