Since the beginning of 2022, there have been multiple suspicious deaths of Russian businesspeople and high officials, sometimes including their family members. These deaths have sparked a global murder mystery, with some speculating that they could be contract killings or the result of Russia's cutthroat business culture. The following are some notable cases:

1. **Igor Volobuyev**: The Vice-President of Gazprombank was about to join the defense and called the death of top manager Avayev a murder.
2. **Anatoly Gerashchenko**: The former head of the Moscow Aviation Institute died after falling down, and police found a note next to his body that led investigators to believe he had died by suicide.
3. **Alexander Tyulakov**: A Gazprom executive who died in February by suicide.
4. **Mikhail Watford**: A Ukraine-born billionaire who was found dead in February.

The Russian government has not provided clear answers to explain these deaths, and the Investigative Committee has repeatedly declined to comment on the cases when contacted. Some experts argue that Russia's business culture and internal pressures could be contributing factors to these mysterious deaths. However, the speculation surrounding these cases has led to various theories, including the possibility of state involvement or contract killings.

Perplexity answer and there's a lot more