BEIJING, Jan. 7 (Yonhap) -- A North Korean train possibly carrying a senior North Korean official crossed into China Monday, a source familiar with the matter said, raising speculation of a visit by the North's leader, Kim Jong-un.
The train passed through the Chinese border city of Dandong around 10:15 p.m., local time, the source said.
"It hasn't been confirmed whether a senior North Korean official was on the train," the source said, adding that all North Korean trains are painted green on the exterior.
Dozens of security vehicles and officials blocked the roads around the train station in Dandong before the train passed. The roads were reopened afterward.
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