Federal police arrested two former executives of construction and engineering giant Queiroz Galvao and issued an arrest warrant for a current executive Queiroz Galvao had already been accused of a playing a leading role in a “cartel” of contractors accused of price-fixing, bribery and political kickbacks, involving Petrobras, but the operation moved more slowly than with some other companies due to what prosecutors describe as the “greater complexity” of the money-laundering activity.
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