Corruption - related losses at Brazil's state - run oil firm Petrobras will likely surpass 20 billion reals ($5.3 billion), federal prosecutor Deltan Dallagnol said on Friday. Dallagnol, part of a task force overseeing Brazil's largest - ever corruption investigation, said the 6.2 billion reals in corruption - related losses the company wrote off in April was "just the tip of the iceberg."
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