The probe agency filed the chargesheet before the NIA Special Court in New Delhi on December 23 against Shajahan Velluva Kandy and Mohd. Mustafa.
The case was filed under section 120B read with 125, 419, 420, 467, 468, 471 of Indian Penal Code (IPC), sections 18, 38 & 39 UA (P) Act, 1967 & section 12 of the Passport Act, 1967.
Accused Shajahan was arrested in July at Delhi Airport after his deportation by the Turkish authorities, while another accused Mustafa was arrested from Chennai in the same month.
Shajahan is allegedly a member of proscribed international terrorist organisation ISIS.
The NIA took over the investigation in the case on the orders of the Ministry of Home Affairs.
However, while crossing the Turkey-Syria border, he was apprehended along with his family by the Turkish authorities and was deported to India in February 2017.
In March, however, he acquired a new Indian passport in the name of Mohammad Ismail Mohideen with the help of Mustafa on the basis of forged documents.
Shajahan along with Mustafa went to Bangkok enroute his final destination to Syria, after which the latter returned to India in April.
However, Shajahan went to Turkey and was again apprehended by the Turkish authorities while crossing over to Syria and was deported to India in July.
A case against the duo was initially registered at the police station special cell in September under Sections 420, 467, 468, 471, 120-B of the IPC, Sections 18, 20, 38 of the Unlawful Activities (Prevention) Act, 1967 and Section 12 of the Passport Act, 1967.
Further investigation is on in the case. (ANI)