TOKYO, March 30, /ITAR-TASS/. North Korea may conduct a nuclear test of “new type” in retaliation to the position of the United Nations Organisation that continues to condemn nuclear and missile programmes in North Korea, the Korean Central News Agency (KCNA) reported on Sunday.

“It is not ruled out that a nuclear test of new type will be conducted to build up our defence potential,” KCNA reported.

Since 2006 up to now North Korea has already carried out three nuclear tests, though the U.N. Security Council resolutions banned that country to conduct any activity related with nuclear technologies. In 2006 and 2009 North Korean specialists have exploded plutonium bombs. Meanwhile, the type of nuclear weapon used in a nuclear test in February 2013 remains unclear. South Korean military experts believe that that bomb could have been uranium.