TASMANIAN Senator Jacqui Lambie is poised to become the latest casualty of the dual citizenship saga plaguing Federal Parliament.

It is understood the independent Senator has informed the Turnbull Government and Senate colleagues she may resign over the section 44 issue.

Last week, questions emerged over Senator Lambie's citizenship status following reports her father was born in Scotland.

The outspoken parliamentarian at the time insisted her affairs were in order, and that she was "satisfied" there was no concern over her citizenship status.

But today it's been reported she has sought urgent advice from British authorities and, according to Fairfax, could hand in her resignation within 24 hours.

Senator Lambie is not expected to comment publicly on her citizenship status today and has moved to dismiss speculation she could resign, but reportedly said that if she was found to be a dual citizen that "Tasmanians will be the first to know".

When questions were raised over her family history last week, the Senator 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, in the case of my father, as an infant."

At the time, Senator Lambie said she was proud of her Scottish heritage, and had learned more about her father's family history in recent weeks while researching her forthcoming autobiography. Her father came to Australia as a toddler from Scotland in the 1950s and her grandfather enlisted in the Australian Army.

If it's found that Senator Lambie held UK citizenship by descent and failed to renounce it before entering Parliament, she would likely be found ineligible to sit in the Senate.

Questions over the former Palmer United Party Senator follow the High Court giving five dual citizens the boot from Federal Parliament, including Deputy Prime Minister Barnaby Joyce, last month.

The dual citizenship saga, which kicked off in July when two Greens Senators resigned after discovering they held dual citizenship, has plagued the parliament for months now and continues to threaten Prime Minister Malcolm Turnbull's delicate majority.

The two major parties have only today struck a deal on how to deal with MP's citizenship disclosures.

Members of the Federal Parliament will need to publicly disclose family history and any steps taken to renounce dual citizenships under a motion expected to go to the Senate on Monday.

The Federal Government has agreed to Labor's request for a December 1 disclosure date and for more details to be disclosed.

It's understood the deal was negotiated between cabinet minister Mathias Cormann and Opposition Leader Bill Shorten.

‘It went faster’: Caretaker’s motorised wheelchair swap

Premium Content ‘It went faster’: Caretaker’s motorised wheelchair swap

A court has heard a man initially denied any knowledge of a woman’s missing...

Heartbreaking decision made after twin’s stillbirth

Premium Content Heartbreaking decision made after twin’s stillbirth

Mum on why she agreed to an autopsy after twin was stillborn

REVEALED: 500,000 pages of documents state wont let you see

Premium Content REVEALED: 500,000 pages of documents state wont let you see

Thousands spent trying to uncover secret government documents