India, Aug. 8 -- A Bangladeshi national was arrested at the Kolkata international airport on Friday when immigration officials found that he was headed to Dubai on an Indian passport, police officials probing the case said.

The man had entered the country on a Bangladeshi passport that identified him as Bibhas Roy, a resident of Chittagong. The man continued to stay in India illegally after his visa expired and applied for an Indian passport by assuming the name Soumik Barua," a police official said, requesting anonymity.

Police stated that the man was travelling to Dubai to catch a connecting flight to Germany. But officials stopped him for questioning at the immigration checkpoint due to suspicions. In his bag, officials found his exp...