Under a new death penalty law that allows children to get revenge on their parents, an Iranian woman who killed her husband was executed by her own daughter.

Maryam Karimi spent 13 years in prison. On March 13, she was hanged by her daughter at Rasht Central Prison, according to the Sun.

The daughter was just 6 years old when her mother killed her father. She reportedly refused to forgive her mom or accept blood money, known as “Diya.”

Karimi was charged with “retribution in kind,” which is known in the Islamic Republic as “Qisas.” It is a form of “eye-for-an eye” revenge.

Qisas encourages the victim’s next of kin to execute the murderer themselves.

“For the past 13 years, they had told her that both her parents were dead, but had to tell her the truth a few weeks prior to the execution to prepare her psychologically,” a source told Iran Human Rights.

The director of the group, Mahmood Amiry-Moghaddam, said, “The Islamic Republic laws make a girl whose father was murdered when she was a child, the executioner of her own mother. The Islamic Republic is the leading promoter of violence in Iranian society today.”

Karimi’s own father, Ebrahim, was also involved in the killing. According to reports, authorities brought him in to see his daughter’s body hanging. However, he did not receive the penalty.

“Four decades of brainwashing at schools, extreme punishments in Iranian society and a patriarchal regime mean that Maryam’s daughter was raised to make sure that executing her mother was a victory for a man, whether that be for her father or for the oppressive regime,” said Aram Bolandpaz, an activist and journalist at Iran International TV.

“Qisas is inhumane, savage, and cruel, no matter where in the world,” he continued. “For a country which prioritizes the rights of unborn babies and emphasizes that life is the most valuable phenomenon, how can the Islamic Republic seize a life from someone in such an awful way.”

The use of Qisas has prompted calls from the UN over the retribution execution in 2020 of Iranian champion wrestler Navid Afkari.

“It is deeply disturbing that the authorities appear to have used the death penalty against an athlete as a warning to a population in a climate of increasing social unrest,” the UN said.