Karnataka Police had earlier informed the court that a magisterial court in Bangalore had issued a production warrant against 30-year-old Bhatkal in connection with the case in which other suspects of the banned IM, including one of its co-founders, Riyaz Bhatkal, and Fasih Mehmood, are accused.
Mehmood has been arrested.
Both Bhatkal and Akhtar were arrested by NIA from the Indo-Nepal border on the night of August 28 last year.
Bhatkal, who hails from Bhatkal village in Udupi district of north Karnataka, was involved in a string of terror attacks in Ahmedabad, Surat, Bangalore, Pune, Delhi and Hyderabad, the NIA had said.
Bhatkal, who was earlier associated with the banned Students Islamic Movement of India, is alleged to have hatched a conspiracy with others to wage a war against India.