Here we go again with North Korea....

More bombs..and who knows for whom?

"The reprocessing of spent fuel rods from the pilot atomic plant began as declared in the Foreign ministry statement dated April 14," said a spokesman from the North Korean foreign ministry.

"This will contribute to bolstering the nuclear deterrence for self-defence in every way to cope with the increasing military threats from the hostile forces," he said.

The latest announcement came hours after a UN Security Council committee placed three North Korean companies on a sanctions blacklist for aiding Pyongyang's nuclear goals.

Earlier this month, North Korea said it would abandon all negotiations and start rebuilding its store of nuclear weapons after it was criticised by UN for illegally launching a missile.

Mohamed ElBaradei, the head of the International Atomic Energy Association, has warned that North Korea is now a fully-fledged nuclear state, with both warheads and missiles.

North Korea is thought to have enough weaponized plutonium to make more than half a dozen atomic bombs.

The latest threat contradicted the current intelligence suggesting that its main reactor at Yongbyon had been mostly disabled and that it could take months to restart it.