Kolkata: A man who attacked and stabbed two police officers outside the North Port police station last Saturday was identified as an illegal immigrant from Bangladesh who was living in the city under a false identity since 2006.The accused, Md Sultan Sk (32), who was staying in Kolkata as Bipul Mondal, was arrested following the attack. The North Port police station registered a case under Section 212 BNS and Section 14A(b) of the Foreigners Act. During the investigation, authorities discovered that Sultan, originally from Charkacha village in Bangladesh's Raipur district, illegally crossed the Benapole border into India in 2006. He subsequently travelled to Sealdah railway station and settled in Kolkata, where he worked as a flower vendor near Howrah Bridge."The accused failed to produce any valid documentation proving his Indian citizenship," said Joint CP (crime & traffic) Rupesh Kumar. Sultan is currently in police custody until June 11 in connection with this case.The revelation of Sultan's true identity came during police interrogation, where he confessed to illegally entering India and assuming a false identity. He was residing at the Armenian Ghat Road, he said. "He was arrested earlier but it is not clear why his Bangladeshi identity was not probed," claimed a police officer. Assistant sub-inspector Partha Chand and constable Sukhendu Majhi, who were stabbed are currently receiving medical treatment. Police authorities have launched a broader investigation to determine if Sultan has any connections to other illegal activities or networks facilitating unauthorised border crossings.