A Lucknow-Delhi IndiGo flight carrying around 180 passengers was delayed on Friday after a bomb threat triggered a security response just before its scheduled departure.
Authorities later found that the threat was a hoax, but the aircraft remained grounded while mandatory security procedures were carried out.
The crew of the aircraft received information about a possible bomb threat on board shortly before departure, sources told PTI.
Tissue paper with 'bomb' written on it triggered panic and prompted security agencies to initiate a full inspection of the aircraft.
However, officials later determined that the threat was a hoax and no explosive or harmful substance was found during the security checks.
IndiGo, in a statement, said that safety and security of its customers, crew and aircraft are its topmost priorities and that the flight will operate its journey to Delhi post securing relevant clearances.