North Korea planning new nuclear test, South Korean intelligence report says NEW: North Korean state media has not made any announcements NEW: Professor: The country knows how to "manipulate the world" South Korea intelligence report says North Korea plans nuclear test Seoul, South Korea (CNN) -- North Korea is planning a new nuclear test in the area where it staged previous atomic blasts, according to a report from South Korean intelligence officials obtained by CNN. The intelligence report has come to light as North Korea gets ready to carry out a controversial rocket launch this week, a move that would further strain ties between the reclusive, nuclear-armed state and other countries in the region. The planned rocket launch is scheduled to take place just months after the ascendancy of its new leader. The South Korean intelligence report says it is highly probable that after the long-range missile launch, North Korea will use the ensuing international condemnation as an excuse to go ahead with the nuclear test in Punggye-ri, the site in the country's northeast where the other two tests were conducted in 2006 and 2009. The report, which said such a test would be considered a grave provocation, includes satellite images that it claims were filmed recently and show the final stages of a tunnel being dug at the site. The photos show an unusual pile of earth and sand near the opening of the tunnel, and the report says this pile has been slowly increasing since March. North Korean state media have not made any announcements regarding plans for a new nuclear test. Two senior U.S. officials said the United States also had reason to believe that the North was planning such an action. "Once again this shows brilliant play (that) they know how to manipulate the world," said Andrei Lankov of Seoul's Kookmin University. If they do a missile launch and in few months a successful nuclear test, especially a uranium based nuclear device, it will send a very strong message to the world. The same message they always want to deliver -- we are here, we are dangerous, unpredictable and it's better to deal with us by giving us monetary and food concessions. The South Korean intelligence report noted that North Korea's two previous launches that it said were to put satellites in orbit were followed a few weeks or months later by nuclear tests. The act of firing the long-range rocket would breach U.N. Security Council resolutions, and Washington has suspended a recent deal to provide food aid to North Korea as a result. CNN's Stan Grant contributed to this report.