A South Korean intelligence source says North Korea may launch a rocket on April fourth or fifth.

The source said Tuesday that the North may install the rocket on a launch pad and start injecting fuel over the weekend.

As a basis for the projection, the source cited the inaugural session of the 12th Supreme People’s Assembly on April ninth.

Earlier this month, Pyongyang announced it will put into orbit an experimental communication satellite sometime between April fourth and eighth. But South Korea, the United States and Japan suspect that North Korea's claim of a satellite launch is a cover for a long-range missile launch.