The Delhi Police Monday registered an FIR based on the complaint lodged by American Airlines after a potential security threat led to the diversion of its flight from New York to Rome Sunday.Authorities said the FIR was registered under sections 217 and 351(4) of the Bharatiya Nyaya Sanhita (BNS) and Section 3 of the Suppression of Unlawful Acts Against Safety of Civil Aviation Act.The Delhi Police Monday registered an FIR based on the complaint lodged by American Airlines after a potential security threat led to the diversion of its flight from New York to Rome Sunday.Authorities said the FIR was registered under sections 217 and 351(4) of the Bharatiya Nyaya Sanhita (BNS) and Section 3 of the Suppression of Unlawful Acts Against Safety of Civil Aviation Act.