Abdulsamad Rahmani, an ethnic Khorasani (Persians from the Iranian Khorasan province which has a large Persian Sunni population) from Birjand city and a student of the largest Sunni institute of Iran in, Daar al-Uloom Makki, in Zahedan, Sistan-Balochestan province was arrested and taken to an unknown place just before he was to continue his studies in Zahedan. Intelligence services refused to tell his family about his whereabouts.