Over the past month the young leader has supervised several military drills, including the test-firings of medium ballistic missiles
South Korea's defence ministry said the missile was fired from the eastern city of Sondok
It was the third such launch by the North in two weeks
The test was the latest in a string of claims by Pyongyang regarding the growing technical sophistication of its nuclear deterrent
According to South Korea's Yonhap news agency, North Korea fired several short-range rockets into the sea off its east coast
The launches came just days after the North test-fired two medium-range missiles
It was the first medium-range missile launched by the North since it fired two in April 2014
Otto Warmbier, a student at the University of Virginia, was arrested on charges of 'hostile acts' against the state
New sanctions block certain transactions on property belonging to North Korean govt and to ruling Workers' Party of Korea
The Japanese and Chinese foreign ministers also discussed the often-strained relationship between their countries
Kim's comments also came days after he was photographed posing with what state media said was a miniaturised nuclear warhead
The Korean peninsula is not an area of strong seismic activity, although minor earthquakes are quite common.
A North Korean newspaper said that the allegations were cooked up by Seoul to shore up support for a controversial surveillance legislation
Said the military is prepared to strike first if they see signs that US and South Korean troops are attempting to invade the North
The unknown class of vessel had been reportedly operating off the North Korean coast earlier in the week when it disappeared
It will also take unspecified steps to impose 'lethal' military, political and economic blows on the South Korean govt
It marked the first time in 2016 that North Korean forces fired short-range ballistic missiles
Three B-2 stealth bombers on a training mission to the Asia-Pacific region
Pyongyang has previously claimed it has nuclear warheads small enough to put on long-range missiles, but experts have questioned such claims
North Korea had earlier warned of pre-emptive and 'indiscriminate' nuclear strikes against South Korea and the US