North Korea accused South Korea of an attempt on its territory.

SyuzhetyYadernoe Korei19.04.2009Severnaya disarming North Korea threatened war if the new sanktsiySevernaya Korea on Wednesday accused South Korea of military provocations on the border between the two countries, reported AFP on 22 April.
As the Korean Central News Agency (KCNA), the South Korean military reportedly moved pillar Pokus to the territory of the DPRK.
"Treacherous provocation was undertaken at a time when the confrontation between North and South had reached its limit. This is an insidious crime seriously annoys the Korean People's Army soldiers and the cause of their anger," - said the Korean official news agency.
North Korea demanded that South Korea immediately return the column to its original place, threatening otherwise to resort to "necessary measures in self-defense." In doing so, according to the North Korean agency, the responsibility for possible consequences would lie with the "South Korean instigator."
Recall, in response to the UN Security Council condemnation of the military tests new missile in April, North Korea has threatened to declaration of war if it will be put against the new economic sanctions. Official Pyongyang also announced the resumption of its nuclear program and expelled from nuclear facilities by IAEA inspectors.