A woman has been charged over an alleged security scare at the electorate office of Federal Minister Anika Wells, just days after MP Helen Haines was left fighting for life.

The 47-year-old woman visited Wells’ office in Nundah, Brisbane, on Wednesday morning before allegedly engaging in threatening behaviour.

WATCH THE VIDEO: Alleged security scare shuts down minister’s office

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Police have charged her with one count of committing public nuisance, and she is due to appear in Brisbane Magistrates Court on November 26.

Wells’ office remains closed amid security upgrades.

“Our staff deserve to feel safe at work and this kind of behaviour is unacceptable,” Australia’s Communications and Sport Minister said on Friday.

Anika Wells has closed her electorate office after a security scare. Credit: Lukas Coch/AAP

The accused was arrested on the same day a WA Minister’s staff were allegedly threatened by a man wielding nunchucks, and less than 48 hours after Indi MP Helen Haines was left fighting for life after being run down by a car.

Surgeons have amputated Haines’ legs, which were seriously injured when she was allegedly attacked outside her Wangaratta office in northeast Victoria.

She remains in a critical but stable condition at The Alfred, and her team is working to reopen her office on Thursday.

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“We want to thank everyone who has reached out with messages of love and support for Helen and her family,” a Friday post on Haines’ Facebook account said. “Our team has been overwhelmed by the kindness shown by the Indi community and people right across Australia and internationally.”

Brendan Nugent, 43, has been charged with dangerous driving causing serious injury, intentionally causing serious injury, and the Commonwealth offence of causing harm to a public official.

Helen Haines was left fighting for life outside her electorate office. Credit: 7NEWS

In WA, two staff members of state minister Hannah Beazley’s team were allegedly threatened by a man wielding nunchucks inside her Victoria Park office on Wednesday afternoon..

John Lawrence Smart, 56, was charged with being armed in a way that may cause fear, making a threat to unlawfully do an act, and possessing a prohibited drug.

Beazley’s office was closed Wednesday afternoon and Thursday.

Meanwhile Amanda Camm, Queensland’s Minister for Child Safety and Domestic and Family Violence, has cited health issues and the alleged attack on Haines for stepping down from cabinet.

Camm recently returned from six weeks of medical leave following major surgery, and has previously spoken about battling chronic migraines.

“The devastating incident involving Helen Haines has reinforced the importance of taking concerns about personal health, safety and wellbeing of people in public life very seriously,” she said.

‘’Public scrutiny and accountability are essential to democracy and to our institutions; harassment, threats, bullying, and personal vilification are not.

“And for the past year, this has been my experience.”

Camm, who will remain as the member for Whitsunday, denied she was pushed amid scrutiny over her management of the child safety portfolio.

Amanda Camm says it was her decision to resign from the ministry. Credit: Darren England/AAP

Across Australia, state and federal politicians are being briefed on how to improve their own security after the alleged attack on Haines.

Police forces, the Home Affairs department and state leaders have rushed to crack down on security and offer briefings.