Passengers at Perth Airport Terminal 1 are allowed back into the building after the Australian Federal Police and WA Police investigated a reported unattended bag, but delays are still expected.
The AFP had urged the public to “avoid the area and await further advice”.
However, after passengers were stuck outside for almost two hours, they were let back into the airport by 6:30pm.
“The AFP and [WA Police] investigation at Terminal 1 International has now concluded, and the impacted areas are beginning to reopen,” a statement from Perth Airport read.
“Delays are expected, and we are working closely with our airline partners and relevant agencies to return operations to normal as quickly as possible.
Perth Airport is located about 12km east of the CBD. (AAP: Richard Wainwright)
“Passengers are advised to check directly with their airline for the latest flight information.”
Earlier in the day, a spokesperson for the airport said an exclusion zone had been set up while police conducted their investigation.
The Terminal 1 drop-off and pick-up area was temporarily closed.
Before the airport reopened, crowds could be seen gathering outside the terminal entrance, with several flights impacted, according to passengers who spoke to the ABC.
One interstate traveller, Austin, said he saw groups of people standing outside the terminal when he arrived for his flight.
“I just heard [my flight’s] delayed and the terminal’s closed, hoping to get an answer soon,” he said.