Energy firm says Ravil Maganov succumbed to 'serious illness;' media reports he plummeted from 6th-floor of Moscow's Central Clinical Hospital; police said probing possible suicide
LUKoil, Russia's largest private oil company and one of the few to voice opposition to the Kremlin's war in Ukraine, says its chairman has died following a "serious illness," disputing local media reports that he had plunged to his death from a hospital window.