What did the report say?
It is to be noted that North Korea has become a virtual pariah in the worldwide community since the United Nations imposed tough sanctions on the country, after conducting nuclear tests and launching three ICBMs a year ago.
The factory is known to have produced the Hwasong-15, the first North Korean ICBM capable of reaching the US.
Lewis's group also published images of a large industrial facility that some USA intelligence analysts believe to be the Kangson uranium enrichment plant.
However, in an article published on 38 North last week, author Gareth Porter took the media to task for its reporting on North Korea's moves toward denuclearization highlighting disagreement within the intelligence community and inside the Trump administration.
Satellite photographs taken in the last month indicate that the regime may be working on one or two liquid fuel intercontinental ballistic missiles (ICBMs), officials told The Washington Post.
Top North Korean officials have discussed the country's intention to deceive the US about the number of nuclear warheads in its possession, including a strategy to potentially declare they have denuclearized after disposing of 20 weapons while retaining dozens more, according to a report by The Washington Post.
Relations between the United States and North Korea appeared cordial recently, after Kim sent the remains of USA troops who died during the Korean War.
Khan seen winning Pakistan vote marred by rigging allegations
Sharif's party tops another poll with 26 percent compared to 25 percent for Khan's Pakistan Tehreek-i-Insaf (PTI). Pakistan Peoples Party co-chairman Bilawal Bhutto Zadari, 29, expressed similar concerns on Twitter.
While the intelligence reported on Monday does not suggest an expansion of North Korea's capabilities it shows work on advanced weapons is still ongoing, the Washington Post said. He declined to answer that, but he did say that North Korea continues to produce fissile material, the fuel for nuclear bombs, and that there are no USA or worldwide inspectors on the ground to see what North Korea is doing at its facilities.
Government officials believe North Korea is continuing to manufacture missiles in a facility near its capital of Pyongyang.
"We see them going to work, just as before", one U.S. official told The Washington Post.
The facility is "not dead, by any stretch of the imagination", said Jeffrey Lewis, director of the East Asia Nonproliferation Program at the James Martin Center for Nonproliferation Studies.
"Offer up 20 first-gen warheads, claim you are or have disarmed, but keep the good stuff in presumably clandestine facilities and hope they aren't discovered", Narang said.
North Korea has threatened to attack the USA and its allies with nuclear weapons on numerous occasions. "They are negotiating for recognition of their nuclear weapons".
Coordinating Human Development and Culture Minister Puan Maharani visited North Korea on Tuesday to deliver a personal invitation from President Joko "Jokowi" Widodo for North Korean leader Kim Jong-un to attend the Asian Games 2018 hosted by Indonesia.
This indicated that there had not been a complete stop in activity during the summit talks.