Panama City, Mar 15 (AFP) The law firm at the heart of the "Panama Papers" global tax evasion scandal that brought down two world leaders announced today it would shut down operations, citing negative press and what it called unwarranted action by authorities.

"Reputational deterioration, the media campaign, the financial consequences and irregular actions by some Panamanian authorities have caused irreparable damage, resulting in the total ceasing of public operations at the end of this month," Mossack Fonseca said in a statement.

But it added a smaller group would continue working to address requests from authorities and other public and private groups.

Last August, co-founder Jurgen Mossack acknowledged the firm had closed most of its offices abroad after its damaged credibility caused business to flounder.

April 3, 2016 marked the beginning of the "Panama Papers" scandal -- a leak of 11.5 million files from Mossack Fonseca's digital archive that revealed how wealthy and influential figures across the world had created offshore businesses to safeguard assets.

The information was obtained by German newspaper Sueddeutsche Zeitung, who shared it with the International Consortium of Investigative Journalists. It was released as a searchable database, with revelations continuing to be unearthed to this day.

Icelandic prime minister Sigmundur David Gunnlaugsson was forced to resign after it was revealed his family had offshore accounts -- while former Pakistani prime minister Nawaz Sharif was disqualified for life from office after being implicated in the documents.

Other figures implicated included former British premier David Cameron, football star Lionel Messi, Argentina's President Mauricio Macri, Spanish filmmaker Pedro Almodovar, to name but a few.

Offshore structures exposure prompts a law firm to cease public operations amid reputational and regulatory fallout. The firm ceased public operations citing reputational deterioration, adverse media coverage, financial consequences and irregular actions by authorities, while maintaining a smaller team to address requests from authorities and stakeholders. The closure is presented as a response to prolonged investigatory and public scrutiny following a large-scale unauthorized disclosure of internal records revealing client use of offshore businesses to manage assets, with continuing disclosures and significant political and professional consequences for persons named in the archive.