TEHRAN, Feb 5 (Aljazeera) - Iran’s supreme leader has pardoned or allowed a reduction in jail sentences for “tens of thousands” of prisoners, including some arrested in recent anti-government protests.

The pardons approved on Sunday by Ayatollah Ali Khamenei came with conditions, according to details announced in state media reports, which said the move would not apply to any of the numerous dual nationals held in Iran.

Those accused of “corruption on earth” – a capital charge brought against some protesters, four of whom have been executed – would also not be pardoned, state news agency IRNA reported.

Neither would it apply to those charged with “spying for foreign agencies” or those “affiliated with groups hostile to the Islamic Republic”.

Iran was swept up by protests following the death of a young Iranian Kurdish woman Mahsa Amini in the custody of the country’s morality police last September. The 22-year-old had been arrested for violating Islamic dress codes.

Iranians from all walks of life took part in the demonstrations, marking one of the boldest challenges to Iran’s government since the 1979 revolution.