An Iranian prison official reportedly called Sholeh Pakravan Friday and informed her that she had one hour to say goodbye to her daughter. Pakravan’s daughter is 26-year-old Reyhaneh Jabbari, who is scheduled to be hanged at dawn on Saturday. Her crime? She killed the man who tried to rape her.

Jabbari was arrested in 2007 and tried for the murder of former Iranian intelligence officer and doctor Morteza Abdolali Sarbandi. After what Amnesty International described as "deeply flawed investigation and trial,” the Tehran criminal court found her guilty and sentenced her to death. The court has denied all her appeals.

URGENT: Authorities in #Iran confirmed Reyhaneh Jabbari is set to be executed at dawn. Act now http://t.co/27tJoYZyvd pic.twitter.com/qNP5wca1lG — AmnestyInternational (@amnesty) October 24, 2014

"Applying such a punishment in any circumstances is an affront to justice, but doing so after a flawed trial that leaves huge questions hanging over the case only makes it more tragic," said Hassiba Hadj Sahraoui, Amnesty International’s deputy director for the Middle East and North Africa Program, in a statement released Friday.

During the trial, Jabbari said she had stabbed Sarbandi in the back only after he tried to sexually assault her. She then said another man who was in the house at the time was responsible for Sarbandi’s death, according to Al Jazeera.

Human rights organizations said Jabbari’s claims were not properly investigated prior to her sentencing. Jabbari was reportedly placed in solitary confinement for two months after she was arrested, prevented from meeting with her lawyer or family and pressured into changing her representation to someone with less experience. Mohamed Ali Jedari Foroughi, Jabbari’s former lawyer, told Human Rights Watch that he was only allowed to meet his client twice in the six months he represented her.

“It is unconscionable that in addition to enduring the pain of having their daughter on death row, Jabbari’s parents must also deal with a judiciary that refuses to play by its own rules and fails to provide them with sufficient and clear information regarding her condition,” said Joe Stork, deputy Middle East and North Africa director for Human Rights Watch.

The Iranian government has executed 585 prisoners this year, with most being put to death by hanging, according to the Iran Human Rights Documentation Center. That comes down to about 58 people a month. Iranian authorities did not announce more than half of those executions.