Earlier, police had told the court during interrogation, Bhatkal had admitted he had set up the arms factory in Meer Vihar and, along with associates, had stayed at different hideouts here.
Bhatkal and Akhtar were earlier taken to Hyderabad after their arrest on September 21 and September 17, respectively, by NIA's Hyderabad unit in connection with the Dilsukhnagar blasts that claimed 16 lives.
The blasts were caused by IEDs planted near Konark and Venkatadiri theatres on February 21 of this year.
Bhatkal and Akhtar were prior to that arrested by NIA for allegedly carrying out various terror strikes in the country.
NIA had said that Bhatkal was involved in bomb blasts in different parts of India since 2003.
According to NIA, Bhatkal, wanted in around 40 terror cases and carrying a reward of Rs 35 lakh, and Akhtar were arrested from the Indo-Nepal border on the night of August 28.
Bhatkal, who hails from Bhatkal village in Udupi district of north Karnataka, was allegedly involved in a string of terror attacks in Ahmedabad, Surat, Bangalore, Pune, Delhi and Hyderabad, NIA had said.
30-year-old Bhatkal, who was earlier associated with banned outfit Students Islamic Movement of India (SIMI), is suspected to have hatched a conspiracy with others to wage war against India.
