A federal investigation into the authority overseeing the $6 billion Dulles Rail project, set for release next week, will show that nepotism at the agency is far more widespread than previously believed and that authority employees may have benefited personally from some of the contracts they awarded, The Washington Examiner has learned.

The final report from the U.S. Department of Transportation’s inspector general will detail contracts that Metropolitan Washington Airports Authority staff steered toward certain companies and that later may have benefited authority employees, according to sources familiar with the inspector general’s investigation.