Argentine President Mauricio Macri said Thursday he made no "malicious omission" from his mandatory asset declarations as a public official, after the so-called Panama Papers revealed his offshore financial interests.

"I did not receive any payment for acting as a director (of offshore companies). Tomorrow I will present myself before the court with all information necessary for the judge to verify that what I have done is correct," he said in a televised address.

The conservative president's new denial of wrongdoing came after a federal prosecutor opened an investigation of his finances.