The flight, which originated from Muscat, was on its way to Delhi after its scheduled stop in Kochi.
In Hyderabad, airport sources on Monday said, "A bomb threat email targeting Lufthansa flight LH 752 was received at the Hyderabad airport at 18:01 hrs on 15th June 2025."
Security was beefed up as agencies swept the airport terminals after the emails were received around 12.40 pm from the ID exhumedyou888@gmail.com.
The Cochin International Airport Limited (CIAL) on Sunday said Manoj Kumar, 42, who was scheduled to fly from Cochin to Mumbai by an Air India flight on Sunday morning made an 'alarming' comment to a Central Industrial Security Force (CISF) officer at the x-ray baggage inspection counter.
Security personnel conducted extensive checks on the aircraft and found no danger, allowing the flight to proceed as planned, a Cochin International Airport spokesperson said in a statement in Kochi.
Protocols for the Bomb Threat Assessment Committee (BTAC), convened in the event of a bomb threat call to an aircraft or airport, have been tweaked to better tackle the spate of the ongoing 'random' Internet-based threats being made to various Indian airlines, official sources said Tuesday.
Pseudonymous or anonymous nature of the social media handle, analysis of the geopolitical situation and presence of VIPs onboard are some of the new criteria that agencies will keep in mind while considering the seriousness of a bomb threat made to Indian airlines.
The threats via microblogging platform X came a day after three international flights originating from Mumbai received bomb threats, causing trouble to hundreds of passengers and airline crew.
Nearly 80 domestic and international flights received bomb threats in less than 24 hours that later turned out to be hoaxes, keeping thousands of passengers and security agencies on tenterhooks.
The passengers were offloaded and the aircraft was moved to an isolation bay for further inspection, airport sources said.
Authorities at the Delhi airport on Friday searched a Vistara aircraft, which was to leave for Pune, following a bomb threat but nothing suspicious was found, the police said.
The aircraft was taken to an isolated bay for a secondary ladder point check after a Bomb Threat Assessment Committee (BTAC) found the threat as 'specific', the sources said.
The flight sought an emergency landing after its pilot was informed about warning about the presence of a bomb in the cargo hold.
A Kathmandu-bound Jet Airways flight with 111 people on board was on Monday halted minutes before take-off from the IGI Airport in New Delhi after a bomb threat.
Officials said passengers on board the two aircraft -- Royal Nepal Airlines (Delhi-Kathmandu) and Air India (Delhi-Bhubaneswar) -- were evacuated.
Two international flights were called back while one which was preparing for departure from the Indira Gandhi International Airport in New Delhi was taken to an isolation bay due to a bomb scare early Saturday, sources said.
An Istanbul-bound Turkish Airlines flight from Bangkok with 157 passengers and crew on board landed at the Indira Gandhi International Airport in New Delhi under emergency conditions following a bomb scare but was cleared for take-off after the security agencies did not find any explosive.
Another nine Indigo flights came under the scanner after warnings that they have bombs on board.