According to the Tasnim news agency, the suspects were detained in different cities in Sistan and Baluchestan Province, and the investigation is still underway.
The reports come after a man driving a car bomb attacked the police headquarters in Chabahar (Sistan and Baluchestan province) on Thursday morning which led to an explosion.
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Two law enforcement officers were killed and another 42 people injured as a result of the explosion.
Ansar al-Furqan group, a Sunni terrorist group operating in Sistan and Baluchestan province, claimed responsibility for the attack in Chabahar.