North Korea claims it conducted a "very important test" on Saturday at its Sohae Satellite Launching Ground.
Pyeongyang's state-run Korean Central News Agency carried a statement Sunday issued by the North's Academy of National Defence Science.
It says the test was successful and the results were reported to the Central Committee of the North's ruling party meaning, essentially, the regime's leader Kim Jong-un.
The results, it said, will help the North change its strategic position.
Sohae Satellite Launching Ground refers to the North's missile engine test site in Dongchang-ri.
It's the one that the regime partially dismantled last year after the Kim-Trump summit in Singapore in June and promised to completely dismantle at the inter-Korean summit in last September.
A couple of days ago, CNN had reported some new activity observed at the site, suggesting that the North was moving to resume missile engine tests.
Pyeongyang didn't provide details on what exactly it tested on Saturday.
But experts think it was a solid fuel engine.
The North has been working to acquire solid fuel missiles because they're quicker to launch and harder to detect.
The North's latest test implies that the regime could, at any time, resume the ICBM tests that have been on hold since November 2017.
The North is further pressing the U.S. to show flexibility in the nuclear talks by the end of the year.
Pyeongyang has warned that it will walk a "new path" if those negotiations don't bear fruit by year's end.
It has recently said its Christmas present for America is completely up to the U.S. to decide.
Oh Jung-hee, Arirang News.