After the launch of the ICBM missile on Wednesday, North Korea claimed that its new ICBM can put whole U.S. mainland within range. The county has 'realized the great historic cause of completing state nuclear force'.
South Korean media Yonhap News reported that South Korea's intelligence agency does not rule out the additional North Korean nuclear test.
North Korea launched a Hwasong-15 ICBM earlier in the day from an area north of Pyongyang, according to the state-run TV broadcaster in its "important" announcement.
In July, Pyongyang test-fired two Hwasong-14 ICBMs. The North's missile flew 960 kilometers to an altitude of around 4,500 km, Seoul's military said.
"North Korean leader Kim Jong-un announced that the country realized the great historic cause of completing state nuclear force," the North's media said.