Iran's judicial authority bans ‘torture’
The "document on judicial security" was signed by Iran's judiciary chief Ayatollah Ebrahim Raisi and released by Mizan Online, the authority's news agency.
It also stresses the "transparency" of the judicial process, including the right to freely choose a lawyer and "the principle of the presumption of innocence".
It also guarantees "consular access" for foreign nationals.
Iran is regularly accused by the United Nations, several Western countries, rights organisations and Iranian lawyers of flouting the principles that Raisi says he wants to see respected.
The publication of the charter comes a week after controversy sparked by videos posted on social media showing police officers beating detainees in pickup trucks in the middle of a street.
In the videos, apparently filmed in Tehran, the detainees are also made to apologise for the "mistakes" they say they have committed.
Raisi on Monday said the police action was a "case of violation of civil rights", according to Mizan Online.
He also ordered measures be taken against those responsible, saying it was "strictly forbidden to attack the accused, even if they are thugs."
Raisi, 59, who is close to Iran's supreme leader Ayatollah Ali Khamenei, was picked to lead the judiciary in March 2019 with the mission of radically transforming an institution mired in corruption.
At the beginning of September, the execution of a young wrestler caused outrage after reports he been convicted on the basis of confessions extracted under torture.
Raisi ran in the 2017 presidential elections with the support of a broad conservative coalition, but was beaten by Hassan Rouhani who won a second term.
Iranian media see Raisi as a possible candidate for the next presidential election, scheduled for June 2021.
Since Raisi took office, the press have covered several high-profile cases of "economic corruption", or prevarication within the judicial authority.
State television announced overnight Wednesday the successful extradition of Ali Reza Heydarabadipour, former head of Sarmayeh bank who was convicted of being the kingpin of an embezzlement scandal harming tens of thousands of teachers.
Heydarabadipour - extradited from Spain in coordination with Interpol - arrived Wednesday evening in Iran, state television said.
He had been sentenced in absentia to 12 years in prison.