It is a dangerous thing to criticise Vladimir Putin publicly in Russia.
The Kremlin leader is notorious for holding grudges, and holds immense power and influence over the majority of companies in the Eastern European state.
That influence has only grown since the illegal invasion of Ukraine in February.
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Since war began, a number of leading Russian oligarchs and businessmen have died.
And the majority have a number of things in common - they're close to the Kremlin leader, are incredibly rich and, crucially, were anti-war.
A number were linked to Gazprom, Russia's largest energy company who came out against the war shortly after it started.
Here, we tot up a few of the strangest occurrences.
Alexander Tyulyakov
The morning after Russia invaded Ukraine on February 24, Tyulyakov, who was a senior executive of Gazproms's Corporate Security, died at his home.
Local reports at the time say that he was found hanged by his own security unit sent from the company itself.
Ravil Maganov - Hospital window
Gazprom and Lukoil are the two largest energy companies in Russia, and Maganov was the chairman of the board of the latter up until two weeks ago, when he passed away after allegedly falling out a hospital window.
The mystery began when a Lukoil statement said that he had passed away after a "severe illness".
However, his body was found on the grounds of Moscow's Central Clinical Hospital.
A packet of cigarettes was found next to a sixth-floor window, leading to claims that he had fallen while smoking.
Ivan Pechorin - Yacht accident
Last week, Ivan Pechorin was found having fallen off his yacht and allegedly drowning near Cape Ignatyev in the Sea of Japan.
He was in charge of the Aviation Industry for the Development of the Far East and the Arctic - and worked directly under Putin for a time.
He was supposedly in charge of modernising Russian's aviation industry.
His predecessor - Igor Nosov - died of a stroke in May.
On September 12, 2022, it became known about the tragic death of our colleague, Ivan Pechorin, Managing Director for the Aviation Industry of the Corporation for the Development of the Far East and the Arctic," a statement from the company said.
Sergei Protosenya - alleged murder-suicide
Back in April, on two consecutive days, Russian oligarchs were found dead, along with their families.
Sergei Protosenya was the giant behind gas company Novatek and was worth over €390m at the time of his death.
He was found hanged alongside his wife and daughter, who had stab wounds, in the family villa in Lloret de Mar in Spain.
Police believed it to be a double homicide, but Protosenya's son categorically denied that and friends have now challenged the fact in public - claiming that he was the victim of a 'staged suicide'
Anatoly Gerashchenko - falling down the stairs
Anatoly Gerashchenko was the latest name to pass away, having died earlier this week "in an accident" after falling down "several sets of stairs"
He was an advisor and rector of Moscow Aviation Institute (MAI) who released a statement after his death, and launched a commission to investigate the incident, which will include representatives from the Ministry of Education and Science, the State Labour Inspectorate and the MAI.
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