The man who co-founded Russia's biggest search engine, Yandex, has died aged 48 after suffering from cancer.
Ilya Segalovich set up the web company with business partner and school friend Arkady Volozh in 1997.
He was diagnosed with stomach cancer last year and went into a coma on Thursday, the company said.
Yandex is one of Russia's biggest internet companies - valued at £6.5bn ($10bn) and has more than double Google's market share in the country.
Mr Segalovich went to hospital on Wednesday with head pains before suddenly deteriorating, the Financial Times reported this week.