Labour has administratively suspended its Islwyn Senedd member Rhianon Passmore from the party pending investigations into allegations regarding her actions.
In a statement, Labour said “all complaints are investigated in accordance with the Party’s complaints procedures.”
The decision comes following an allegation on the Guido Fawkes website that Ms Passmore was seen driving a car with two different number plates.
The BBC has approached Ms Passmore for comment.
Guido Fawkes reported Ms Passmore was “spotted driving out of the Welsh Parliament’s car park with her number plate hanging off, revealing a different one underneath.”
A Labour spokesman said: “The Labour party takes the conduct of our elected representatives extremely seriously and all complaints are investigated in accordance with the party’s complaints procedure.”
Ms Passmore has represented Islwyn in Cardiff Bay since 2016.
Her suspension leaves the Labour party in the Senedd with only 29 of the 60 seats.
In 2018, the Labour politician was suspended from what was then the Welsh Assembly for two weeks for failing to take a breath test.
She was banned from driving by Newport magistrates on 12 February 2018, after admitting failing to provide a specimen for analysis.
The assembly standards committee recommendation to exclude her for 14 days was accepted without objections in the Senedd chamber.
She apologised at the time, referring to “private struggles that I have found difficult to master”.
Ms Passmore said that on the day of her arrest she had tried to drive from Cardiff to her mother’s house after drinking three glasses of wine.
Ms Passmore said she suffered an asthma attack and took a high dose of medication, prednisone.
Her car broke down in the St Mellons area of the city and while she was waiting for the breakdown service, the police arrived and asked her to provide a breath sample.
A standards committee report said she tried twice but was unable to do so.
Ms Passmore said she did not deliberately fail to give a sample and was distressed after not being able to use her asthma medication properly.