mossack fonseca
© Rodrigo Arangua / AFP
Intelligence agencies from several countries, including CIA intermediaries, have abundantly used the services of Panamanian law firm Mossack Fonseca to "conceal" their activities, German newspaper Sueddeutsche Zeitung (SZ) says, citing leaked documents.

Both "secret agents and their informants have used the company's services," wrote the newspaper, which earlier this month published online materials based on 11.5 million documents from the Panamanian law firm. It has been called the largest leak on corruption in journalistic history.

"Agents have set up shell companies to conceal their activities," the Munich-based newspaper reported, adding that there are CIA mediators among them.

According to SZ, Mossack Fonseca's clients also included some of those involved in the so-called Iran-Contra affair, in which several Reagan administration officials secretly facilitated arms sales to Iran in the 1980s in order to secure the release of US hostages and fund Nicaragua's Contra rebels.

The Panama Papers also claim to reveal that some "former high-ranking officials of the intelligence services of Saudi Arabia, Colombia and Rwanda" are listed amongst the company's clients. Among them was Sheikh Kamal Adham, the former Saudi intelligence chief, who according to SZ, was "one of the CIA's key intermediaries in the 1970s" in the Middle East region.