The raid was carried out in search of data on the possible use of offshore companies sold by the firm to "disguise or promote illegal activities." The firm came under scrutiny after its files were leaked to a German newspaper, which worked with the International Consortium of Investigative Journalists (ICIJ) to publish stories about the firm's activities.
Guillermina McDonald, an attorney for Mossack Fonseca, submitted a motion seeking to invalidate the search due to the protections afforded its clients. The motion said the search violated "the privacy and the confidentiality of correspondence and communications" of the firm.
The court, however, rejected those arguments, according to a note from the Office of the Attorney General.
Prosecutor Javier Caraballo led the raid, which lasted 27 hours. Caraballo said that the case is still in the investigation period. If the law firm appeals the decision, it will be heard by the Second Superior Court.