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Border authorities are investigating after a boat with dozens of men aboard landed in the remote Western Australian town of Beagle Bay.
The Australian Border Force has confirmed it is conducting an operation in the state's north-west in response to the incident, and said no one without a visa will be allowed to remain in the country.
"The ABF is undertaking an operation in the north west of Western Australia," it said. As this operation is ongoing, no further information will be provided.
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"Australia's tough border protection policies means no one who travels unauthorised by boat will ever be allowed to settle permanently in Australia. The only way to travel to Australia is legally, with an Australian visa."
More than 20 men from Pakistan and Bangladesh were found at a beach in Beagle Bay this morning.
They are reported to be in good health.
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Asked about the incident at a press conference this afternoon shortly after the arrival had first been reported, Prime Minister Anthony Albanese said he was yet to be briefed on the situation.
"I've been travelling in the car, so I haven't been advised about that, but our policies are clear," he said.
Opposition Leader Peter Dutton said the reports of the arrival were "disturbing" and called on Home Affairs Minister Clare O'Neil to release detail about the incident.
"I think the prime minister here needs to answer some serious questions, that Minister O'Neill needs to stand up today to provide an explanation to the Australian public about what is going on," he said.
Beagle Bay is a small town in Western Australia's Dampier Peninsula, about 100km north-east of Broome.
