India claims it has proof hijackers were Pakistanis

Since the hijacking, India and Pakistan have been trading allegations, both countries accusing the other of involvement in the drama.

"Interrogations have confirmed that all five [hijackers] are Pakistanis, that this was a Pakistani operation, executed with the assistance of the Harkat-ul-Ansar," Advani said.

The Harkat-ul-Ansar separatist group, which is fighting for independence in Kashmir, is Pakistan-based.