An IndiGo flight from Mumbai to Qatar's Doha was delayed today with passengers alleging that they waited inside the aircraft for nearly five hours. The passengers claimed they were eventually asked to deboard the plane -- which was scheduled to take off at 3:55 am -- and were taken to the immigration waiting area at the Mumbai airport due to some "technical issue" with the aircraft. About 250 to 300 passengers were reportedly stranded at the airport.