22-year-old died in custody of Iran's morality policy on Sept. 16 

An Iranian coroner's report denied Mahsa Amini had died due to blows to the head and limbs while in the custody of Iran's morality police and linked her death to pre-existing medical conditions, state media said on Friday.

The death of 22-year-old Amini while in police custody has ignited three weeks of nationwide unrest, marking the biggest challenge to Iran's clerical leaders in years.

Her father has said she suffered bruises to her legs, and has held the police responsible for her death.

The coroner's report said her death was "not caused by any blow to the head and limbs." It did not say whether she had suffered any injuries.

Amini was arrested in Tehran on Sept. 13 for "inappropriate attire," and died three days later.

Referring to the day Amini collapsed in custody, the coroner said she had briefly regained consciousness but that "cardio-respiratory resuscitation was ineffective in the first critical minute, resulting in brain damage."

The report noted pre-existing medical conditions linked to a brain tumor for which she had undergone an operation when she was eight years old.