Rio de Janeiro - XINHUA
Security elements escort the former international director of the Brazil's state-run oil company Petrobras Nestor Cervero , after being arrested in Curitiba, capital of Parana, Brazil, on Jan. 14. 2015. Nestor Cervero, former international director of the company Petrobras was detained at Rio de Janeiro's international airport as he returned from a trip to London, prosecutors said in a statement.