As rumors and reports about the health of North Korea's dictator swirled over the last few days, a Japanese newspaper is now saying that a team of Chinese doctors has been sent to the reclusive nation and separately a group has released satellite images believed to be of the leader, furthering speculation about the health of Kim Jong Un.

"The Chinese Communist Party dispatched the team of about 50 experts on or before April 23, but it is unclear if it is related to Kim's health, sources in the party said on April 25," according to the Asahi Shimbun, a major Japanese newspaper. 

The newspaper said this appeared amid widespread rumors that Kim "has been suffering from a health-related problem and is in a serious condition."

But another guess was that the doctors' presence was actually because the two nations were joining forces to fight the coronavirus pandemic, according to the newspaper. 

The medical team included doctors from the People’s Liberation Army General Hospital in Beijing, according to the Asahi's sources.

Also over the weekend, the group 38 North reported that a train "possibly belonging" to the North Korean leader was discovered by satellite images at a resort town in North Korea, further throwing into question the health and whereabouts of Kim.

"A train probably belonging to Kim Jong Un has been parked at the Leadership Railway Station servicing his Wonsan compound since at least April 21, according to commercial satellite imagery. The train’s presence does not prove the whereabouts of the North Korean leader or indicate anything about his health, but it does lend weight to reports that Kim is staying at an elite area on the country’s eastern coast," said 38 North on its website.

The train "can be seen at a railway station reserved for use by the Kim family. It was not present on April 15 but was present on both April 21 and 23."

Questions have been raised about Kim's health, after he failed to attend the birthday celebration of North Korea’s founding father and Kim’s grandfather, Kim Il Sung, earlier this month.

Some reports have suggested that Kim, believed to be in his late 30s and with aggressive nuclear ambitions for the nation, had a "cardiovascular" treatment earlier in the month. 

According to 38 North, the Wonsan complex houses several large guesthouses and a recreation center, as well as a port, shooting range and a dock. 

This story has been updated.