The judiciary’s Mizan news agency said the death sentence was carried out in Isfahan. Hours earlier, the Iran Human Rights Society reported his family had been summoned for a final visit.
Bahramian endured years in prison, where rights advocates say he was tortured.
He was finally sentenced to death, together with his brother, Fazel, after the Samirom Revolutionary Court convicted them of “enmity against God" over their alleged involvement in the killing of a member of the Revolutionary Guard's Basij paramilitary.
Rights groups say the case stems from unrest in Samirom in November 2022, when security forces killed at least three people — Abbasi, Morad Bahramian, and Moslem Houshangi — during nationwide demonstrations.
Their 40-day memorial in January 2023 turned into a mass protest in which a Basij force, Mohsen Rezaei, was killed, prompting a wave of arrests.
Mehran and Fazel Bahramian were detained 10 days later and held in solitary confinement at an IRGC detention center in Dolatabad, Isfahan. According to relatives, Mehran suffered broken ribs and a ruptured eardrum under interrogation, while Fazel sustained severe head and facial injuries.
The Bahramian family and other relatives of detainees were pressured to stay silent. Some shut down social media accounts out of fear.