According to the agency, the train crossed the Chinese border city of Dandong.
Earlier it was reported that Kim Jong Eun went to the capital of Vietnam, where he will meet with US President Donald Trump, on an armored train.
The American leader confirmed that his second meeting with Kim Jong-un will be held in late February in Vietnam.
The head of the US Foreign Policy Research Center, Sergei Samuilov, in an interview with NSN, commented on the situation on the Korean Peninsula against the backdrop of the intensified diplomatic efforts of the DPRK.