U.S. intelligence officials suspect that North Korea is continuing to build new missiles in the same research facility that manufactured the country’s ballistic missiles capable of reaching the United States,  AP reported quoting The Washington Post.

According to the source, new evidence, including satellite photos taken in recent weeks, suggests that work is underway on at least one and possibly two liquid-fueled intercontinental ballistic missiles at a research facility in Sanumdong on the outskirts of Pyongyang.