North Korea on Friday accused the U.S. Central Intelligence Agency and South Korea’s intelligence service of a plot to attack its “supreme leadership” with a bio-chemical weapon and said such a “pipe-dream” could never succeed.

Tension on the Korean peninsula has been high for weeks, driven by concern that North Korea might conduct its sixth nuclear test or test-launch another ballistic missile in defiance of U.N. Security Council resolutions.

Reclusive North Korea warned this week that U.S. hostility had brought the region to the brink of nuclear war.

The North’s Ministry of State Security released a statement saying “the last-ditch effort” of U.S. “imperialists” and the South had gone “beyond the limits”. Continue reading.