A senior official in the Russian cyberintelligence department that American officials say oversaw last year?s election hacking has been arrested in Moscow on charges of treason, a Russian newspaper reported Wednesday. The arrest raised the possibility that Mr. Mikhailov and Mr. Stoyanov had interfered in this cooperation. Mr. Mikhailov served in the F.S.B.?s Center for Information Security, the agency?s cyberintelligence branch, which has been implicated in the American election hacking. In another indication of high-level turmoil over cyberintelligence issues within the security agency, Kommersant reported on Jan. 13 that the director of the Center for Information Security, Andrei Gerasimov, would be fired. The newspaper article, in Kommersant, which cited unidentified sources in Moscow?s technology industry and the F.S.B., said the treason charges related to work on criminal hacking investigations.

Batista checked in on an American Airlines flight scheduled to land at 10:30 a.m. Rio time. RIO DE JANEIRO Former billionaire Eike Batista, once Brazil`s richest man, is scheduled to arrive in Rio de Janeiro early on Monday, where he is wanted by police in connection with charges including an alleged bribe of about $16 million to a former governor. Police said last week that Batista had paid roughly $16 million to former Rio Governor Sergio Cabral in exchange for support of the businessman`s many Rio-based endeavors. "Batista, a brash entrepreneur who became the face of Brazil`s fizzled commodities boom, had been sought since last week by Brazilian police, who raided his Rio mansion and confiscated his luxury cars as part of their bribery investigation. In the Globo interview, Batista said he never intended to flee and had been in New York on business.