Following calls on the Iranian judiciary to take swift action on those imprisoned over the country's post-vote unrest, Iran says 20 of the detainees will be put on trial.

Twenty of those accused of carrying out acts of sabotage in the course of the post-election protests in Iran will be subject to court action from Saturday.

The detainees face charges including having contact with the exiled terrorist group Mujahedeen-e-Khalq Organization, carrying out bombings, carrying firearms and grenades, and attacking Basij and security forces.

"They are also charged with attacking military centers and universities, sending pictures to enemy media, organizing thugs and rioters, vandalizing public and state property including destroying banks and houses," IRNA reported.

The arrests took place in protests that erupted following the June 12 presidential election, in which the incumbent Mahmoud Ahmadinejad was announced as the winner.

With the opposition claiming that the vote was fraudulent, supporters of the defeated candidates took to the streets in protest at the vote-result.

Thousands were detained in the aftermath of the vote, many of whom have since been released. According to Judiciary spokesman Ali-Reza Jamshidi, at least 300 people remain behind bars.

Earlier on Tuesday, Iran announced that 140 people detained in the country's post-election turmoil have been released.

Rapporteur of the Majlis National Security and Foreign Policy Commission Kazem Jalali said on Tuesday that another 150 individuals remain in prisons throughout Iran and could be released soon.

Also detained are 50 "political figures and members of counter-revolutionary or foreign groups who meddled in the riots," Jalali, a spokesman for a parliament committee investigating prisoner conditions, added.

The trials have been scheduled as Judiciary Chief Ayatollah Mahmoud Hashemi Shahroudi ordered officials on Monday to decide within a week the fate of protesters detained in the aftermath of the disputed presidential election.

The Leader of the Islamic Revolution, in a separate move, earlier called for the administration of justice in the case of the country's post-vote detainees.

Head of Iran's National Security Council Saeed Jalili said Monday that Ayatollah Seyyed Ali Khamenei had ordered authorities to "precisely" probe into incidents in which wrongdoings may have been committed against detainees.

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