US prosecutors have opened a criminal investigation "regarding matters" related to the 'Panama Papers' leak of documents that have revealed secret offshore bank accounts linked to the rich and powerful.
Preet Bharara, US attorney for the Southern District of New York, disclosed the probe by his office in a letter to the International Consortium of Investigative Journalists. In the letter, which was posted on the Guardian's website and has been authenticated by the Financial Times, is seeking to speak with an ICIJ employee about the data leak.
A spokesman for the US attorney's office declined to comment. In the letter Mr Bharara writes that his office has opened an investigation "regarding matters to which the Panama Papers are relevant."