North Korea says missile launch tested ability to carry large nuclear warhead

North Korea said on Monday it had successfully conducted a mid-to-long range missile test on Sunday supervised by leader Kim Jong-Un which was aimed at verifying the capability to carry a “large scale heavy nuclear warhead.”

The missile was launched at the highest angle so as not to affect the security of neighboring countries and flew 787 kilometers reaching an altitude of 2,111.5 kilometers, the North’s official KCNA news agency reported.

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WATCH: North Korea launches ballistic missile test

0:41 North Korea launches ballistic missile test

It landed in the sea near Russia on Sunday in a launch the United States called a message to South Korea days after its new president took office pledging to engage Pyongyang in dialog. A U.S. official, speaking on condition of anonymity, said initial assessments showed the missile landed 97 km (60 miles) south of Russia’s Vladivostok region.

An intercontinental ballistic missile is considered to have a range of more than 6,000 km (3,700 miles).

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1:44 U.S. working with international partners as North Korea continues to conduct ballistic missile tests

Experts said the altitude reached by the missile tested on Sunday meant it was launched at a high trajectory, which would limit the lateral distance it traveled. But if it was fired at a standard trajectory, it would have a range of at least 4,000 km (2,500 miles), experts said.

Kim Dong-yub of Kyungnam University’s Institute of Far Eastern Studies in Seoul said he estimated a standard trajectory would give it a range of 6,000 km (3,700 miles).

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“The launch may indeed represent a new missile with a long range,” said Jonathan McDowell of the Harvard Smithsonian Center for Astrophysics, referring to the estimated altitude of more than 2,000 km (1,240 miles). “It is definitely concerning.”

WATCH: Australian PM urges China to pressure North Korea to end missile tests

1:17 Australian PM urges China to pressure North Korea to end missile tests

North Korean attempted but failed to test-launch ballistic missiles four times in the past two months. It has conducted various tests since the beginning of last year at an unprecedented pace. It also conducted its fourth and fifth nuclear tests last year.

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Bonnie Glaser, an Asia expert at the Center for Strategic and International Studies think tank in Washington, said among the responses expected from the Trump administration would be further pressure on all countries to fully implement U.N. Security Council sanctions resolutions against North Korea.