A senior Labor MP has been suspended and stripped of the party whip pending an investigation, Sky News understands.
Christina Rees, who represents Neath’s constituency in south Wales, was Wales’ shadow secretary under Jeremy Corbyn.
She will sit as an independent MP in the Commons until the inquiry is concluded.
The Labor Party said it would not comment on individual cases.
Sky News has contacted Ms Rees’ office for comment.
In a statement to The Guardian, she said: “There has been a complaint against me with the Labor Party which is under investigation and I am therefore administratively suspended until the process is over.
“I do not know the details of the complaint but I fully cooperate with the investigation.”
There are now a total of 14 independent MPs in the Commons.