Viktor Trukhin, 59, has been arrested after Russia's prime intelligence company, the FSB, detained him underneath mysterious circumstances.

Mr Trukhin served because the director of the St. Petersburg Research Institute of Vaccines and Serums for the previous eleven years and reportedly knew all of Vladimir Putin's "health secrets", The Sun reports.

This comes amid ongoing hypothesis surrounding the well being of the Russian chief.

The determined try to flee Russia comes after he was abruptly fired from a senior publish following “fraud” allegations.

The Federal Medical Biological Agency (FMBA) terminated Mr Turkhin's place final week.

Russian safety providers have been apparently handed a file alleging his involvement in fraud and corruption claims.

The news of his arrest right this moment comes six days after Mr Trukhin mysteriously vanished.

Russia's FSB spy company intercepted Mr Trukhin as he tried to cross the border into Belarus, in accordance with the Telegram channel Cheka-OGPU.

The 59-year-old reportedly had full entry to data of Russia’s newest analysis and growth within the subject of vaccines, serums and “bacterial preparations”.

The Telegram channel reported {that a} prison case was opened in opposition to him when “it turned clear that Trukhin supposed to go away the Russian Federation and will inform a whole lot of fascinating issues about Russian vaccines and serums".

Trukhin was found to have been in possession of a Nicaraguan passport, according to Cheka-OGPU.

The fraud case against him reportedly centres on an alleged £4.75million payment to a South American biotechnology institute.

The St. Petersburg Research Institute of Vaccines and Serums led the Russian effort to tackle coronavirus.

His institute has also developed treatments for hepatitis and sexually transmitted diseases, and plays a leading role in exporting Russian vaccines abroad.

The Russian Telegram channel reported that Mr Trukhin was last seen in Moscow on 3 September by his daughter.

Mr Trukhin wrote a mysterious farewell letter to the staff of his institute last week, announcing his departure.

The letter added: “This decision was not mine, unfortunately.”

There remains regular speculation around President Putin's health, led by amateur social media sleuths who examine videos of President Putin’s public appearances.

Many try to identify changes in his appearance, speech, gait, or posture as evidence of faltering health.

This comes as Vladimir Putin tries to foster better hyperlinks with North Korea as Russia is on the lookout for navy tools for its invasion of Ukraine.

It is known that North Korean chief Kim Jong Un could journey to Russia to fulfill Putin by the tip of September.