Faramarz Javidzad, an Iranian-American citizen, died in the notorious Evin Prison on Saturday as his physical health deteriorated due to a lack of medical attention.

On Friday night, after several days of declining health, Javidzad was transferred to the prison clinic. However, after a medical examination, he was returned to his cell, as prison authorities prevented his transfer to a hospital, as reported by IranWire.

It remains unclear what he was convicted of, and whether the United States raised his case during recent negotiations for a prisoner exchange with Iran.

On Saturday, despite his blood pressure reaching a critical level, prison authorities continued to prevent his transfer to a hospital.

The 60-year-old had reportedly lived in the United States for two decades before returning to Iran a few years ago.

Since the establishment of the Islamic Republic in 1979, a significant number of prisoners have lost their lives due to a lack of access to proper medical care.