New satellite photos have revealed new details about North Korean leader Kim Jong Un, after days of rumors and allegations that he was seriously ill and underwent a failed operation.

The "38 North" website, a project of the Stimson Research Center, said that satellite images showed a parked train at the complex of North Korean leader Kim Jong Un, in the coastal city of Wonsan on April 21 and 23, according to the South Korean Yonhap News Agency.

A train was spotted at the coastal complex of the North Korean leader https://t.co/KYUq6GuyZP

- Yonhap News Agency (@YonhapArabic) April 30, 2020

"The train was first observed at this station on April 21, and again on April 23, but it cannot be determined whether it has stood at the station since then," the website said.

He added: "On April 29th the train remained in the same position," but added: "The motor vehicle (locomotive) is no longer parked on the south side of the train, and it is unclear whether it left or was moved down the canopy of the station, but in both Either way, the train doesn't seem ready to leave. "

The site specializing in North Korean affairs indicated that "the presence of the train there does not indicate the whereabouts of the North leader and does not indicate anything related to his health."

And the US "NK News" website, which specializes in North Korean affairs, reported on Tuesday that satellite images showed the presence of boats that are often used by "Kim", and that its movement pattern indicates that it may be in Wonsan.

According to the "38 North" website, there were at least two other cases over the past year in which the train was seen at the same station, during the times when it was reported that "Kim" was in the coastal city.

The first time was in July, when the North Korean leader was said to have inspected a new submarine in the southern shipyard "Shinbu", about 100 km away.

The second time was in November, when Kim was said to have overseen a flying competition in Wonsan.

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