"The person fell out of the sixth-floor window and died on account of his accidents," a supply instructed TASS.
Lukoil confirmed the dying of its chairman on Thursday in an announcement revealed on its web site.
Ravil Maganov "handed away following a extreme sickness", Lukoil stated, making no point out of a fall.
"Maganov immensely contributed to the event of not solely the corporate, however of your complete Russian oil and fuel sector," the corporate stated.
Lukoil, Russia's second largest oil and fuel firm, made headlines in March when it known as "for the soonest termination of the armed battle" in Ukraine.
"We specific our honest empathy for all victims, who're affected by this tragedy," the corporate's board of administrators stated in an announcement to shareholders, workers and prospects on the time.
"We strongly assist a long-lasting ceasefire and a settlement of issues by way of severe negotiations and diplomacy."
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The agency produces greater than 2 per cent of the world's crude oil and employs greater than 100,000 folks.
RIA Novosti quoted a legislation enforcement supply Thursday as saying Maganov "most probably dedicated suicide".
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"Investigating authorities are engaged on the spot to determine the causes of the incident," the supply instructed RIA.
A minimum of 5 distinguished Russian businessmen have reportedly died by suicide since late January, based on earlier CNN reporting