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BRASILIA, April 1 (Reuters) - Brazil's Federal Police on Friday launched the latest stage of a sweeping investigation into corruption at state-controlled firms, federal prosecutors said in a statement.
The warrants in the 27th round of the so-called "Operation Car Wash" focused on an allegedly fraudulent loan from Banco Schahin to state-run oil producer Petroleo Brasileiro SA , prosecutors said in a statement. (Reporting by Silvio Cascione)