Panamanian crime prosecutors have searched the offices of Mossack Fonseca, the law firm whose leaked documents revealed how the world's wealthy and powerful used offshore companies to stash assets.
More than 11 million documents known as the Panama Papers have been the basis for dozens of news articles around the world detailing shady financial transactions involving presidents, prime ministers, kings, and many others.
Six police officers set up a perimeter around the firm’s offices in Panama City April 12 while prosecutors worked inside.
The attorney general's office said in a statement that the investigators were reviewing documents, but gave no other details.
Mossack Fonseca has denied any wrongdoing, saying it only set up offshore financial accounts and anonymous shell companies for clients.
Firm co-founder Ramon Fonseca has said the only crime that was committed was the computer hack itself.
He has said he suspects the hack originated outside Panama, possibly in Europe, but has not given any details.