Iranian security forces have arrested four Kurdish civil rights activists in Sanandaj, Kurdistan province, and Javanrud, Kermanshah province, over the past week.
Masoud Miraei, 53, was arrested without a warrant on 24 July and has been denied access to medical care since his arrest.
The activist, who recently underwent open heart surgery a while ago and also suffers from diabetes, was arrested on the Sanandaj-Kermanshah road and taken to an undisclosed location.
His brother, Ebrahim Miraei, was also arrested on 24 July without a court order at his workplace in Sanandaj.
On the same day, security forces arrested Hozan Babakarami, an activist and Kurdish language teacher, without a warrant at his workplace in Sanandaj.
In addition, on 29 July, environmental activist Yasser Nouri was beaten and arrested without a court order by security forces on a street in Javanrud.
The charges brought against the activists and their whereabouts remain unknown.
According to statistics compiled by the Kurdistan Human Rights Network (KHRN), in the first three weeks of July, at least 41 Kurdish civilians and activists were arrested by the security services on political charges in various cities in the provinces of West Azerbaijan, Kurdistan, Kermanshah, Ilam and Tehran.