A Victorian father accused of threatening to blow up Perth Airport could face 10 years behind bars if found guilty.
The international terminal was locked down for hours on Wednesday afternoon and Keiron Beau James Hedges was taken into custody in the city less than two hours later.
The 57-year-old faced court on Thursday, claiming his words were misrepresented.
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He allegedly told a security guard to "F— off" after being challenged for walking through immigration without a passport yesterday afternoon.
He's then accused of saying: "I am going to blow this place up".
Back outside, he allegedly left a backpack on a bin, prompting the terminal to be evacuated and the bomb squad to be called in.
"It was the manner of the way the bag was left by itself on top of, allegedly on top of a bin," Australian Federal Police acting Superintendent Peter Brindal said on Thursday, in a press conference.
"Just in a suspicious manner in our view."
It wasn't just people in departures who were affected, as 450 passengers had to remain onboard two planes for three hours while hundreds more had to wait in the arrivals hall.
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"We know we live in a world where these threats exist. The issue was taken very seriously," Police Minister Reece Whitby said.
The Victorian man became angry and yelled in court on Thursday as he tried to apply for bail.
A magistrate heard that during his police interview he told officers he'd been informed to inform the public that the airport and car park would be blown up.
But Hedges told the court he believed there "had been a misrepresentation of his actual words".
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A prosecutor opposed his release saying more charges would be laid beyond the existing count of threatening to destroy, damage, or endanger the safety of a Commonwealth aerodrome.
He was remanded in custody for a mental health assessment to face court again next week.
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