Amiri said a Revolutionary Court in Tehran sentenced her to two years in prison and a 500-million rial ($562) fine for “spreading falsehoods.”
She received an additional one year for “propaganda against the state” and a 30.3-million rial ($37) fine for appearing without a hijab in public.
“When simply opposing the death penalty is considered propaganda against the state, then execution itself is a political tool of intimidation,” Amiri wrote.
Amiri, a graduate law student at Tehran’s Allameh Tabataba'i University and a campaigner for students’ rights, previously served seven months of a one-year prison sentence in 2022 for her advocacy against the death penalty and for women’s rights in Iran.
“Speaking about the situation of prisoners and Evin prison has also been considered spreading falsehoods," she added in her post.
The court also imposed additional punishments, including a two-year ban on leaving the country and joining political or social groups.
Reflecting on the ruling, Amiri said her struggle is about standing up for ideals, supporting fellow prisoners, and resisting executions.
"At the end of the day, a person should know how many steps they have taken… With the hope that one day we burn all the gallows and execution scaffolds,” she wrote.
Amiri's sentence comes amid a broader clampdown, with student activist Khashayar Sefidi last year receiving a one-year prison term for propaganda against the state after opposing the death sentence of dissident rapper Toomaj Salehi.