WASHINGTON, NOVEMBER 02

The United States has information that indicates North Korea is covertly supplying Russia with a "significant" number of artillery shells for its war in Ukraine, White House National Security spokesperson John Kirby said on Wednesday.

Kirby told a virtual briefing that North Korea was attempting to obscure the shipments by funneling them through countries in the Middle East and North Africa.

"Our indications are that the DPRK is covertly supplying and we are going to monitor to see whether the shipments are received," Kirby said, adding that Washington would consult with the United Nations on accountability issues over the shipments.

"It is not an insignificant number of shells, but we don't believe they are in such a quantity that the would change the momentum of the war," he said.

"And it's certainly not going to change our calculus ... or with so many of our allies and partners about the kinds of capabilities we're going to continue to provide the Ukrainians."

North Korea said in September it had never supplied weapons or ammunition to Russia and has no plans to do so, while warning the United States to "keep its mouth shut" and stop circulating rumors aimed at "tarnishing" the country's image.

Referring to North Korea missile launches on Wednesday, Kirby said they did not pose an immediate threat to US personnel in the region, and added that the United States would make sure it had the capabilities there to defend its allies.

North Korea fired at least 23 missiles into the sea on Wednesday, including one that landed less than 60 km (40 miles) off South Korea's coast, which the South's President Yoon Suk-yeol described as "territorial encroachment."

It was the first time a ballistic missile had landed near the South's waters since the peninsula was divided in 1945, and the most missiles fired by the North in a single day. South Korea issued rare air raid warnings and launched its own missiles in response.