Brazil's troubled state-owned oil company says it will reveal its estimate on how much it lost in a sweeping kickback scheme when it releases an audited report of its financial earnings from last year's third and fourth quarters.

A statement released by Petrobras late Thursday said the results would be released on Wednesday.

Release of the audited results has been delayed by the investigation into a kickback-corruption scheme embroiling the company.

Prosecutors say big construction and engineering firms paid at least $800 million in bribes and other funds in return for inflated contracts with Petrobras. Part of that money allegedly went to the governing Workers Party and other parties for political campaigns.