Kabir Ahmed was scheduled to fly to Dubai on May 11 from the international airport. Based on suspicion, immigration authorities detained Ahmed, who was found in possession with a fake Indian passport, a senior police official said.
The authorities later handed Ahmed to the Sahar police, after which he was arrested, he said.
A case under relevant sections of the Indian Penal Code (IPC) and Passport Act and Rules was registered, he said, adding a probe was on.