Australian airports hit by outage at immigration counters

In a statement the Australian Border Force (ABF) said immigration staff were added to manually process travelers, adding, "The issue is currently being rectified and systems are slowly returning online."

No flights have been affected at Australia's busiest airport of Sydney, however, a spokesperson said by email, but added, "Inbound and outbound queues are longer than usual."

It was not immediately clear when operations would return to normal.