The Thane police are investigating whether the AK-56 they recovered from the house of Naeem Khan on Saturday is the same that Sanjay Dutt returned to him before the 1993 blasts.

While Naeem's wife Yasmin was arrested after the recovery, as she was at home when the rifle was found, officers also plan to take custody of Naeem, who is currently lodged in Thane Central Jail, for questioning.