The special cell of Delhi Police filed its supplementary charge sheet against Bhatkal and Akhtar before Additional Sessions Judge Daya Prakash who took cognisance of the final report and fixed the matter for further hearing on March 3.
Both the accused have been named in the charge sheet for the offences under various sections of the IPC and under the provisions of the Unlawful Activities (Prevention) Act.
The police had earlier filed its charge sheet against 16 accused, including alleged IM operative Quateel Siddiqui who had died inside Pune's Yerawada central jail in June 8, 2012.
In its supplementary charge sheet, the special cell alleged that Bhatkal and Akhtar had set up the arms manufacturing factory in Meer Vihar area of Nangloi in Outer Delhi for manufacturing arms and ammunition to carry out terrorist activities in Delhi and other parts of the country.
"A huge quantity of IEDs, explosives materials, arms and ammunition was recovered from there," it alleged.
The special cell had arrested Bhatkal and Akhtar in connection with the case on October 28 last year.
It had in November 2011, busted the factory located in Meer Vihar area and several alleged IM suspects were arrested.
An FIR was registered against Bhatkal on November 22, 2011 and later a non-bailable warrant was also issued against him for setting up the factory.