MOSCOW (Sputnik) — The Investigative Committee requested to place Ulyukayev under house arrest.
A court official told RIA Novosti that it had received the request from investigators.
Ulyukayev has been charged with taking an especially large bribe and extortion, Investigative Committee spokeswoman Svetlana Petrenko said earlier on Tuesday.
Russia's Investigative Committee said early on Tuesday that Ulyukayev was caught in the act when taking a $2 million bribe for a positive appraisal that allowed Russian energy company Rosneft to buy the state's shares of Bashneft oil company.
Petrenko stressed that the Bashneft deal is legal and undisputed, noting that the agreement is not under investigation.