The man who allegedly planted a threat note on a Jet Airways flight wanted the airline to shut down. He felt that if the airline shuts down, then his girlfriend working in the Delhi office of the company would leave her job and stay with him in Mumbai. Jeweller Birju Kishore Salla, who allegedly planted a note about hijackers and a bomb in the toilet of a Mumbai-Delhi Jet Airways flight, was arrested on Tuesday under the stringent Anti-Hijacking Act, a senior official said. This is the first arrest under the Act which came into force in July 2017, replacing the 1982 vintage law, according to which an accused can face a maximum punishment of life imprisonment till death and his properties can be confiscated, police said. The Mumbai-Delhi Jet Airways flight, with 115 passengers and seven crew members on board, had on Monday made an emergency landing after a note stating that there were hijackers and a bomb on board was found in the plane's washroom.