Japan detected seismic activities in North Korea
Japan's Meteorological Agency has held a news conference where they showed charts that detected seismic activities in North Korea at 3am GMT this morning.
North Korea state television earlier confirmed that it had carried out a nuclear test, which has received widespread condemnation from the international community.
Read: Nuclear test is chilling tactics from North Korea.
North Korea has just made this a more dangerous world
Welcome to a more dangerous world, welcome to a world with a new nuclear power and to a world where the global powers are threatened.
Nuclear test is chilling tactics from North Korea
Testing nuclear weapons is North Korea's way of saying we can defend ourselves, you have to take us seriously.