North Korea conducted a ground test of an engine for an intercontinental ballistic missile (ICBM), North Korea’s state run Korean Central News Agency reported Saturday.

According to the KCNA, North Korea conducted a successful “ground jet test of a new type high-power engine of inter-continental ballistic rocket” under the guidance of North Korean Supreme Leader Kim Jong Un at Sohae Space Center in North Phyongan Province, on the country’s west coast.

The state media reported said the test “satisfied all scientific and technological indexes.”

North Korean leader Kim Jong Un boasted of the test’s success and claimed North Korea has