The missiles, three of which landed within 200 miles of Japan's coastline
in its exclusive economic zone, were fired as part of a drill by North Korea's Hwasong artillery units, KCNA said Tuesday.
The report said the units were part of "the KPA Strategic Force tasked to strike the bases of the US imperialist aggressor forces in Japan in contingency."
North Korean leader Kim Jong Un supervised the country's ballistic missile launches and was said to be pleased with the unit's performance, according to KCNA.
There are currently about 54,000 US troops
stationed in at least seven bases scattered across Japan, including Misawa Air Base in the far north to Okinawa on the country's southernmost islands.
The military bases in Japan cost the US government about $5.5 billion in 2016.
Trump talks to Japan, S. Korea
World leaders were quick to condemn North Korea's actions.
White House press secretary Sean Spicer said, "The launches are consistent with North Korea's long history of provocative behavior. The United States stand with our allies in the face of this very serious threat.
"The Trump administration is taking steps to enhance our ability to defend against North Korea's ballistic missiles, such as through the deployment of a THAAD battery to South Korea."
Japanese Prime Minister Shinzo Abe told reporters he and President Donald Trump talked by phone about 8 a.m. Tuesday local time (6 p.m. ET Monday) and agreed the missile launches were "a clear violation of UN Security Council resolutions" and a threat to the international community.
President Trump also spoke Monday with the acting South Korean President Hwang Kyo-ahn to discuss North Korea's missile test, a US official says, in addition to the call with Abe.
According to the acting president's office, they agreed to continue annual military drills and add pressure and impose sanctions against North Korea.
Security Council to meet
The UN Security Council is scheduled to discuss North Korea in closed consultations at 10 a.m. Wednesday morning. A planned Syria meeting was moved to 3 p.m.
In a statement issued on Tuesday night, the council "strongly condemned" the North Korean launch, saying it was a violation of multiple UN resolutions.
"The Security Council (will) continue to closely monitor the situation and take further significant measures," the statement said.
Secretary-General António Guterres also denounced the missile launch and said, "Such actions violate Security Council resolutions and seriously undermine regional peace and stability."
Military authorities in South Korea, Japan and the United States confirmed the launch of four projectiles
, which traveled almost 1,000 kilometers (620 miles). US officials said they were extended range SCUD missiles.
A fifth missile was also fired but failed.
This isn't the first time North Korea has launched multiple missiles over this distance.
In September 2016, North Korea launched three ballistic missiles about 1,000 kilometers to land in Japan's Air Defense Identification Zone
, provoking a strong response.