Singapore sees rare travel delays as tech problem hits immigration checkpoints

People pass the control tower of Singapore's Changi Airport, Singapore January 18, 2021. REUTERS/Edgar Su

SINGAPORE (Reuters) - A technical glitch at entry points into Singapore led to rare delays at one of the world's busiest airports on Friday, with snaking queues and disgruntled passengers for several hours as automated immigration lanes suffered problems.

The city-state's immigration authority said it had "resumed normalcy" at checkpoints by 4 p.m. local time (0800 GMT) and was investigating the cause of the disruption, after earlier reporting "system slowness" at selected checkpoints, including, Changi Airport and two land border crossings with Malaysia.