According to a rather garbled account from Argentina, the central bank of that country is not going to prosecute people it is investigating for financial crime, as long as the crimes they allegedly committed have been struck off the statute book since they are thought to have committed them.

The only warrant for this piece of news in the English language is a note on the site of Tavarone, Rovelli, Salim & Miani, a law firm in the Argentine capital of Buenos Aires.

The firm's site says: "The Board of Directors of the Argentine Central Bank announced...that the Superintendence of Financial and Exchange Institutions was instructed to apply the legal principle of retroactivity of the 'more favorable criminal law' on the ground of law precedents set forth by the Supreme Court of Justice (in re Cristalux and Docuprint). According to this principle, subsequent rules that are more favourable to the prosecuted persons or entities apply to cases that were before deemed a criminal offence by the Criminal Exchange Regime."

The account also hints that 'rules' - possibly regulatory rules - are also part of this.