(Reuters) - A widening corruption scandal at state-run oil company Petroleo Brasileiro SA may change the country forever, Brazilian President Dilma Rousseff said on Sunday in her first public remarks since a sweeping police operation last week.
Police on Friday arrested top executives of some of the country's largest construction and engineering firms as part of a probe into money-laundering and bribery allegations at Petrobras, as the oil company is commonly known.
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