The doctor worked at a notorious prison outside of Tehran where hundreds of protestors were taken in the crackdown following June's disputed presidential election. He later reported to a parliamentary committee that one young protester he treated died from heavy torture.
Opposition websites are claiming he was killed because he knew the conditions of a number of torture victims at the prison, including the son of a prominent conservative figure, which was the major factor that increased anger among even government supporters over the tortures.
Hundreds of protesters and opposition activists were arrested after protests following this summers disputed presidential election. The Iranian government has confirmed around 30 deaths occurred, while other estimates put the number closer to 70. More than 100 protesters, activists and pro-reform opposition have been put on trial and accused of coordinating or promoting the protests and/or and taking part in a scheme to depose the government.