An expert on North Korea's military has said that recently released satellite images of the nation's military installations suggest it could be preparing for submarine-based ballistic missile test, reports AFP news.
The preparations come amid a tense escalation of threats between the U.S. and North Korea over the latter's recent gains in nuclear weapons.
The activity on a ballistic missile experimental for a submarine-type SINPO shipyard building naval and submarine base of Mayang-do suggest "that the North could prepare a new series "sea" of test-firing, that he has undertaken changes and improvements to the systems and launch of the submarine, or that it is developing a more advanced version of the Pukguksong-1".
The Pukguksong-1 is an SLBM that was first successfully test-launched in August a year ago.
The tensions between USA and North Korea escalated after Pyongyang tested an intercontinental ballistic missile in July that appears to have the range to hit major United States cities.
The missile, during its first test launch, covered a distance of 500 kilometers (300 miles) before plummeting in the water near Japan.
Mr. Bermúdez stated that the preparations around the submarine were consistent with those seen in previous trials.
The renewed tensions followed the progress of Pyongyang in its nuclear and missile programs.
The preparations come amid a tense escalation of threats between the United States and North Korea over the latter's recent gains in nuclear weapons technology and its successful launch of an intercontinental ballistic missile that theoretically could hit cities on the USA east coast.
Nuclear-powered guided missile submarines capable of launching covert attacks on the enemy, and staying submerged for more than a decade without refueling, can deter North Korea submarine-launched attacks originating from the south or southeast of the peninsula, South Korean newspaper Maeil Business reported.