NEW : Security forces Sunday dispersed protesters protesting women 's arrests , group says . Since then , opposition activists and mothers whose children have disappeared or have been executed or detained have also joined the group . Rights group : 12 women 's group members arrested yesterday by Iranian security forces . arrests made during a peaceful demonstration in a Tehran park on Friday , rights group says . Group formed by women whose children were killed in recent anti - government protests .
NEW : Security forces Sunday dispersed protesters protesting women 's arrests , group says . Rights group : 12 women 's group members arrested yesterday by Iranian security forces . arrests made during a peaceful demonstration in a Tehran park on Friday , rights group says . Group formed by women whose children were killed in recent anti - government protests .