Mumbai, Oct. 18 -- US-born actor Imran Khan on Saturday filed a petition before the Bombay high court challenging the leave India notice (LIN) issued by the Foreigners Regional Registration Office (FRRO) in Mumbai, calling it arbitrary and issued in haste. The petition comes two days after the FRRO ordered him to leave the country by October 28 for demanding Chief Election Commissioner Gyanesh Kumar's ouster during a demonstration in the city on October 10. The petition is likely to be mentioned for urgent hearing on Monday .htc...