Did a Russian billionaire die in a helicopter crash?

A Russian billionaire has died in a helicopter crash near the French-Italian border, marking the latest sudden death of a figure in the cryptocurrency world.

Did another unidentified passenger die in Monaco helicopter crash?

It comes amid local reports that another unidentified passenger was due to fly aboard the aircraft but cancelled at the last minute. The helicopter's 35-year-old pilot also died in the crash according to the Monaco Daily News.

What happened to Vladimir Putin's crypto stars?

He is the latest in a growing list of powerful people in Vladimir Putin’s Russia to abruptly die. The deaths, often reported as suicides, have included energy, oil, finance and shipping bosses as well oligarchs and millionaires. But three crypto stars have all died in recent weeks.

How many crypto stars have died in recent weeks?

But three crypto stars have all died in recent weeks. Tiantian Kullander, 30, died ‘in his sleep’ last week, while millionaire Nikolai Mushegian, 29, drowned on a Puerto Rico beach. Mr Kullander, the co-founder of the Hong Kong-based digital asset company Amber Group, ‘unexpectedly’ died on November 23, the company said.