The longtime head of Russia’s Far East region of Khabarovsk has been detained in Moscow on suspicion of embezzling money from the Rosneft oil giant, Russian investigators said Thursday.

Viktor Ishayev, 70, led the Khabarovsk region from 1991 to 2009, and oversaw development in the Far East as a presidential envoy and minister between 2009 and 2013. He served as the vice president of Rosneft between 2013 and 2018.