North Korea announced Tuesday it has produced more plutonium for its atomic weapons programme, a day after threatening to "go its own way" unless Washington agrees to direct talks on the nuclear standoff. The isolated communist country had "successfully completed reprocessing 8,000 spent fuel rods by the end of August" at its Yongbyon nuclear complex, the official Korean Central News Agency (KCNA) said. "Noticeable successes have been made in turning the extracted plutonium weapon-grade for the purpose of bolstering up the nuclear deterrent," it said. The comments indicated growing impatience at Washington's delay in accepting Pyongyang's offer of high-level bilateral talks.