Besides, it said, the U.S. is a "criminal state" and a "cancer to global peace", which had "massacred 50,000 innocent people in the northern half of Korea using biochemical weapons during the Korean war".
The North's state-run broadcaster says the United States fabricated the claim to keep up pressure on the country.
The Pentagon says North Korea probably has a long-standing chemical weapons program with the capability to produce nerve, blister, blood, and choking agents.
North Korea has been aiming to expand its illegal trade network in order to circumvent global sanctions against its nuclear and missile program, various media reports showed Thursday.
The State Department's notification comes less than 24 hours after North Korea denied the findings from a soon to be released UN Panel of Experts (PoE) report which found the DPRK sent shipments to Syria's chemical weapons agency.
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But as the TV personality faces an allegation of sexual harassment from a former E! Seacrest has repeatedly denied the claims . He replied, " You don't mind, do you?" "Umm, I don't know", Lawrence said , working through her feelings.
"As we have clearly said several times, our republic does not develop, produce and stockpile chemical weapons and opposes chemical weapons themselves", the spokesman said, via KCNA.
In February past year, Kim, the estranged half brother of the North Korean leader, was killed by two women - one from Indonesia and the other from Vietnam - at an worldwide airport in Kuala Lumpur.
"Syria can not possibly be using chemical weapons because it very simply has none in its possession", Aala told the United Nations-sponsored Conference on Disarmament in Geneva.
On Tuesday, U.S. State Department Spokeswoman Heather Nauert said Washington has had concerns about North Korea's trade ties with Syria for some time, "especially as North Korea becomes more desperate, they look for different, creative, and horrific ways to try to make money to fund their criminal regime".
The North Korean official added that Washington had "incited the United Nations Security Council Sanctions Committee to fabricate the theory of cooperation between us and Syria".