North Korea has reportedly made considerable progress in its preparations to launch a long-range rocket.

The Joint Chiefs of Staff (JCS) on Sunday said that militaries of South Korea and the United States confirmed that the North moved the main part of the rocket to a launch facility.

A JCS official said that the North seems to have made significant progress in the launch preparations, adding the South Korean and American militaries are cooperating to find out the specific schedule for the take-off.

Earlier on Sunday, Japan’s Fuji Television reported that the North moved an object that appears to be the main body of the rocket to the launch facility in Dongchang-ri, Cholsan County, North Pyeongan Province.