A sweeping investigation into corruption in Brazil is targeting more infrastructure projects for this year's Olympic Games than previously made public, a federal prosecutor said, citing testimony from construction companies and executives.

Carlos Lima said the probe into corruption on projects for the Olympics in Rio de Janeiro in August is not limited to Porto Maravilha, or the "Marvelous Port," a regeneration of the city's waterfront that includes five high-rises bearing the name of U.S. property mogul and presidential candidate Donald Trump.

"There are more," Lima said in an interview Monday in his office in the southern city of Curitiba. "There are leniency agreements underway that talk about this, but until they are finalized we will not know how many (projects) for sure."