North Korea says it has successfully completed the launch of a new ballistic missile, according to state media.

The Pukguksong-2, previously unpublicized part of its arsenal which North Korean state media described as a medium long-range ballistic missile, was test fired on Sunday under the supervision of North Korean leader Kim Jong Un, according to North Korea’s Korean Central News Agency, KCNA.

A US official said the missile traveled 500 kilometers (310 miles) before landing in the Sea of Japan, also known as the East Sea, and that it was launched from North Pyongan province.
Intermediate-range ballistic missiles typically travel from 3,000 to 5,500 kilometers (1,864 to 3,417 miles).

The Pukguksong-2 is believed to have used a solid-fuel propelled engine which enables faster launch and increases the mobility of the launch process, according to a spokesman of the South Korean Joint Chiefs of Staff spokesman.

A U.S. official said at the weekend the Trump administration had been expecting a North Korean “provocation” soon after taking office.

The latest test came a day after Trump held a summit meeting with Japanese Prime Minister Shinzo Abe, and also followed Trump’s phone call last week with Chinese President Xi Jinping.

Abe described the test as “absolutely intolerable” and said North Korea must comply with U.N. Security Council resolutions.