Hyderabad, Dec. 5 -- A large number of passengers were left stranded at airports across India on Friday, amid over 500 IndiGo flights being cancelled or delayed. The passengers expressed their anguish, calling it a "sinister plan."

Speaking to ANI, a passenger in Hyderabad said that she went back home due to the cancellation, but later she was called back right before the flight was about to leave. Owing to the confusion, the passenger criticised the airline.

The passenger said, "I reached the airport in the morning at around 5 am. I went to the Indigo counter. They told me the flight is cancelled. When actually it wasn't cancelled. I showed my boarding pass, and they said yes. They were very sure my flight was cancelled, and they sent ...