Singapore Airlines (SIA) on Sunday confirmed that it received a bomb threat on flight SQ001 from San Francisco to Singapore.
The plane landed safely earlier in the day at the at Changi Airport, but disembarkation was delayed until around 1.30 p.m. (local time) and passengers had to wait for nearly two hours to collect their baggage, Channel News Asia reported.
SIA said the matter has been referred to the authorities with no details to be provided "as it concerns security".
One passenger, surnamed Hoe, told local newspaper Today that they were forced to wait on the tarmac for about 20 minutes before it was announced that the disembarkation gate had been changed.
"We were then parked at some remote area near the airport, and no further information was given, apart from waiting for air traffic control instructions... At approximately 1.10 p.m., the captain made the announcement that the plane will be held on the tarmac, and we would be ferried to the terminal by airport bus due to security concerns," Hoe said.