North Korea fired two more projectiles on Tuesday, reports South Korean state news agency Yonhap .

The news agency relied on information from the South Korean army leadership. According to the army top, these are short-range rockets.

The projectiles were fired from the southern province of Hwanghae in North Korea and ended up after about 450 kilometers in the Japanese Sea, east of the peninsula.

North Korea has fired projectiles and rocket tests more often in recent weeks. The country states that the increased rocket activity is a response to the joint military exercises of South Korea and the United States. Those exercises would be a violation of earlier agreements.

North Koreans watch national rocket launches. (Photo: Getty Images)

US and Japan not yet concerned about rocket testing

The Americans are not yet worried about the tests, but are keeping a close eye on the situation. In addition, there is "close cooperation with our South Korean and Japanese allies," the US Department of Defense said in a statement.

The Japanese Ministry of Defense said it would not consider the recent missile testing of North Korea as a direct threat to Japan. The Ministry doubts that North Korea has rockets that can reach Japanese territory as a specific target.

US President Donald Trump and the North Korean leader met twice to talk about denuclearization of the Asian country, most recently at the end of June. However, a definitive agreement has not yet been concluded.

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Trump is the first American president to set foot in North Korea