chairman of Russia's oil giant Lukoil Ravil Maganov has died after falling from a window in a Moscow hospital, Russian state media reported.
Maganov, 67, committed suicide, state-run agency TASS reported citing unnamed law enforcement sources.
"He was [getting treated] in the hospital after a heart attack. In addition, he was taking antidepressants," TASS reported Thursday.
Lukoil later confirmed his death but said Maganov "passed away after a serious illness."
This is the sixth incident involving high-profile Russian energy executives dying under murky circumstances this year.
In May, Russian outlets reported that Lukoil's former top executive and board member Alexander Subbotin died after receiving dubious treatment from a "shaman" that involved an infusion of poison from a toad.
In April, two former high-ranking managers of Novatek, Russia's second-largest natural gas producer, and Gazprombank, a large bank linked to a Gazprom gas corporation, were found dead along with their family members. State media reported that they killed their spouses and children and then committed suicide.