Iranian police said on Monday the death of a young woman in custody was an “unfortunate incident” which they do not want to see repeated, a semi-official news agency reported. Mahsa Amini, 22, fell into a coma and died following her arrest in Tehran last week by the morality police sparking protests in parts of Iran including Tehran and the Kurdistan province where she came from.

The police have said Amini fell ill as she waited with other women being held by the morality police, who enforce strict rules imposed since Iran’s 1979 Islamic revolution requiring women to cover their hair and wear loose fitting clothes. But Amini’s father told pro-reform Emtedad news website on Sunday that his daughter was fit and had no health problems.