Tigerair flight TT-271 made an emergency landing in Sydney, Australia, on December 17th.
The plane took off for Melbourne, Australia, but had to turn back after an incident onboard prompted security concerns.
The plane landed back safely. Everyone aboard remained unharmed.
Details about the nature of threat are not known at the moment.

Condor flight DE-2402 had to return and make an emergency landing at Frankfurt Airport, Germany, on September 12th.
An Air India flight made an emergency landing at Astana International Airport, Kazakhstan, on January 26th.