Tasmanian crossbench senator Jacqui Lambie has become the eighth federal politician to fall victim to the ongoing dual-citizenship saga, with reports she intends to resign when the Senate meets early this afternoon.
The Tasmanian senator has reportedly confirmed to media outlets she is a UK citizen by descent through her father, who was born in Scotland.
SBS World News has contacted Senator Lambie's office for comment and confirmation.
Last week, the outspoken Tasmanian senator said she did not believe she was dual citizen.
"I am proud of my Scottish ancestry and my father is too," she said.
"I'm happy to put on record that I'm satisfied that my parents are both Australian citizens and I have no concerns about me being a dual citizen because of where they were born or came from."
Her Tasmanian Senate colleague Liberal Eric Abetz said Senator Lambie had "acted with integrity" by resigning, and said she had brought some "interesting flare" to the chamber in her time.
Senator Lambie had promised to resign if she found she held UK citizenship, amid mounting pressure in the Senate on Monday.
Australian Conservatives leader Cory Bernardi hinted another Senate colleague could be in breach of the constitution.
"I do have concerns that there is a member of this chamber, at least one, who knows they are not eligible to be here because of their constitutionality," Senator Bernardi told the chamber.
As with the other recently disqualified senators, Senator Lambie's position would normally go to the next person on her Jacqui Lambie Network ticket in the 2016 election, following a recount.
But the next person on the JLN ticket may not be able to replace her.
A constitutional expert told AAP on Monday there are doubts around Senator Lambie's possible replacement, Devonport mayor Steve Martin.
Professor George Williams, from the University of NSW, said Mr Martin could be in difficulty because of his local government position.
Whether a local council position is an "office of profit under the Crown" - a ground for disqualification under the constitution - has been a grey area in constitutional law.
"The High Court would need to decide," Prof Williams told AAP.
The next person on the ticket, Rob Waterman, is CEO of Rural Health Tasmania
Rural Health Tasmania's annual report for 2017 said it received funding from several federal government programs run by the departments of health and social services.
That could also constitute an office of profit under the Crown.
- with wires
