North Korea ICBM pictures
North Korea denied reports that it was developing biological weapons after reports said it began tests to load anthrax onto its intercontinental ballistic missiles. This photo, taken Nov. 29 and released Nov. 30 by North Korea's official Korean Central News Agency, shows the Hwansong-15 missile, which is capable of putting the United States mainland in its range. Getty Images/AFP/ KCNA VIA KNS

North Korea vehemently denied that it was developing biological weapons and said it would take revenge on the U.S. for suggesting in a report that the East Asian country was "pursuing chemical and biological weapons which could also be delivered by missile."

North Korea’s state news agency KCNA reported on a statement Wednesday by the Director of Press of the Institute for American Studies (IFAS), Ministry of Foreign Affairs, North Korea, saying claims by U.S. media and experts that the East Asian country was "pushing forward with so-called 'biological weapons development program' as a part of the 'wild ambition for developing the WMD (Weapons of mass destruction),'" were groundless.

The report said as a member of the Biological Weapons Convention (BWC), "[North Korea] maintains its consistent stand to oppose development, manufacture, stockpiling and possession of biological weapons."

The statement comes after a report by Japan’s Asahi Shimbun newspaper cited an unidentified person connected to South Korea’s intelligence services, who said North Korea began tests to load the bio-agent anthrax on to its intercontinental ballistic missiles.

Another report by the U.S.’ National Security Strategy published Monday stated that biological weapons being developed by North Korea could be delivered by missiles, triggering fears of a potential biological war.

"North Korea — a country that starves its own people — has spent hundreds of millions of dollars on nuclear, chemical, and biological weapons that could threaten our homeland," the document said.

In its response, North Korea said the claims in the report were "the U.S. stereotyped method to cook up untruths as truths, stubbornly insisting that black is white and fabricating anything for satisfying their aggressive greed." It also called the U.S. "an empire of evils full of plots, fabrications, lies and deceptions."

In the statement, the Director of Press of IFAS also accused the U.S. saying, American politicians and white supremacists were overtly researching and developing biological weapons in "conceived attempts for state terrorism and racial extinction."

"The DPRK, as a state party to the BWC, maintains its consistent stand to oppose development, manufacture, stockpiling and possession of biological weapons. The more the U.S. clings to the anti-DPRK stifling move, in such a manner as a thief shouting to stop thief, by denouncing us as a state of 'developing the biological weapons,' the more hardened the determination of our entire military personnel and people to take revenge will be and the earlier the days of destruction of the U.S., an empire of evils will come," the report further threatened.

The threat of war with North Korea intensified after the country’s state television reported last month that it had launched a new ICBM, dubbed the Hwasong 15, which is a nuclear weapon capable of reaching reach the entire U.S. mainland.