Immigration department of the NSC Bose International Airport in Kolkata on Thursday detained a man from Bangladesh following an anonymous tip off that he was an ISI agent.
Airport officials said a call came shortly before a Biman flight from Dhaka was to land in Kolkata.
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The caller hurriedly said a passenger in the flight, Kishore Kumar, was an ISI agent and disconnected the line.
After the flight landed, the immigration department detained the passenger who was a carpenter by profession. Kumar was being interrogated, the officials said, adding it was also possible that someone has tried to frame him.
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