MOSCOW -- For months, the owner of a muckraking news Web site had stayed away from his home after receiving warnings to tone down his critique of Kremlin-backed authorities in the Russian province of Ingushetia, friends said. But Magomed Yevloyev finally boarded a plane to return to Ingushetia this week, and there he encountered a surprise: The local governor was riding on the same plane, a few seats away from him in business class. When the plane landed in Ingushetia, the governor was met by a Mercedes that whisked him away. And Mr. Yevloyev was arrested at the airport, deposited...