Billionaire Pavel Antov was in India to celebrate his 65th birthday.

According to Indian police, he must have been inside his hotel room when he jumped from a window.

According to police, he was said to have been depressed after his friend and travel companion, oligarch Vladimir Bidenov, died in the same hotel just two days earlier, NDTV reports.

The incident must have happened on Christmas Eve.

The friend Vladimir Bidenov is said to have been found among empty wine bottles in his room and died of a heart attack, according to the same police source, the BBC writes.

Criticized the Russian invasion

Pavel Antov was a politician in the Vladimir region and the founder of Vladimirsky Standard – a large Russian manufacturer of meat and sausage products.

He ended up in a storm in his home country in June when he criticized the Russian invasion on social media.

"A girl has been pulled out of the racial masses.

The girl's father seems to have died.

They try to pull the mother out with a crane because she is trapped under a slab.

To be honest, it is extremely difficult to call this anything other than terror,” Antov wrote in a WhatsApp message after a Russian robot attack on the Shevchenkivskyi residential area outside Kyiv.

Pavel is said to have later removed the post, saying that he is a loyal supporter of the president and a "patriot" who supports the war, according to the BBC.

Russian authorities see no criminal links

"We are aware of the tragedy that occurred in Odisha, where two of our citizens died," the Russian Embassy in India told NDTV, continuing:

"We are in constant contact with the relatives of the deceased and with local authorities.

As far as we know, the police do not yet see any criminal links in these tragic events”.

However, the deaths of Pavel Antov and Vladimir Bidenov are the latest in a string of mysterious deaths of influential Russian men.

Among the most high-profile cases were the head of Russian oil giant Lukoil, Ravil Maganov, who, according to Russian data, fell from a window at a hospital in Moscow and the head of finance and security at Gazprom, who was found hanged.