ABC News said Blatter was being investigated by the FBI and US prosecutors as part of the probe that led to last week's indictments.
Attorney General Loretta Lynch announced last Wednesday that the United States had indicted 14 FIFA executives and sports marketing executives accused is a $150 million bribery scheme.
Seven FIFA officials were arrested in a dawn swoop by Swiss police on a luxury five-star hotel in Zurich ahead of the body's executive meeting, which saw Blatter briefly re-elected.
At the time, US prosecutors said the investigation was ongoing but would not be drawn on the possible charges against other senior FIFA figures and pointedly refused to answer questions about Blatter.
-AAP