The sources said Pena Nieto, who was president from 2012 until 2016, is the person identified as “Enrique P” in a statement from the attorney general’s office (FGR) yesterday.

Reuters was not immediately able to contact Pena Nieto for comment. He previously denied any wrongdoing when reports of an investigation by Mexico’s anti-money laundering unit emerged last month.

The statement said the FGR was “developing investigation procedures” into various federal crimes.

It said the investigations into money laundering and illegal international transfers stemmed from complaints by tax authorities.

In July, Mexico’s anti-money laundering unit asked the FGR to investigate millions of dollars’ worth of money transfers abroad addressed to Pena Nieto.

Pena Nieto addressed the accusations in a series of tweets at the time, saying, “I am certain that before the competent authorities I will be allowed to clarify any question about my assets and demonstrate their legality.”