Sayed Abdul Sattar, a prime accused in the Godhra train carnage, was on Thursday remanded to eight days' police custody by a special POTA court in Ahmedabad.
Sattar alias Kala was arrested by the Gujarat and Mumbai police in a joint operation in Mumbai on Wednesday.
Director General of Police (crime and railways) A K Bhargav told reporters in Ahmedabad that Sattar's interrogation had revealed that he had harboured several accused of the train carnage and acted as a conduit for hawala transactions for their activities in Godhra.
Sattar runs a transport company in Mumbai and is a native of Godhra.