Iranian human rights activist Raheleh Rahemipour was taken to hospital on Thursday following a heart attack.

Rahemipour is one of the four political prisoners in the women’s ward of Evin who are over 70 years old. She was imprisoned in November to serve a five-year prison sentence, despite suffering from a brain tumor and other ailments.

Tehran’s Revolutionary Court headed by notorious Judge Abolqasem Salavati sentenced Rahemipour to six years in prison over such allegations as “propaganda against the government” and attempts to “disrupt national security.”

Her brother, Hossein Rahemipour, was also a political prisoner who was executed in 1984. His child, born in Evin prison, was never handed over to his family after his execution.

A group of 61 women political prisoners went on a hunger strike in the women’s ward of Evin on Thursday to protest the Islamic Republic’s ruthless execution spree, including the execution of Mohammad Ghobadlou.