'This plane is going to get hijacked exactly at 6.30. Ignore this and see the consequences.' It was found by a passenger who alerted the cabin crew. Flight 6E-451 carrying 178 passengers returned to KIA after a note warned of a takeover, though thorough checks confirmed it was a hoax. A handwritten hijack threat found inside the lavatory of IndiGo flight 6E 451 prompted its return to Bengaluru.