Korean and Russian engineers are now investigating a glitch with the Naro rocket that prevented its scheduled launch on Friday.
A helium leak was discovered five hours before the due launch in Goheung, South Jeolla Province.
Authorities cited a torn rubber seal and a resulting leak in the connection between the first stage rocket and the launch pad that released the helium gas.
The Korea Aerospace Research Institute and Russia's Khrunichev Space Center are probing the exact cause.
For now, the Korea institute says they will pinpoint and fix the problem.
The launch is likely to be rescheduled for next month after notifying the international aerospace authorities.

Reporter : julian@arirang.co.kr