A Ukip MEP is being investigated by police over allegations of fraud after claims he misused EU funds.
Nathan Gill, 43, is alleged to have misused European Parliament allowances and expenses for political purposes, although his party says the politician has not been spoken to by police.
Mr Gill has been an MEP for Ukip since 2014 and was elected to the Welsh Assembly this year.
The probe first began when a complaint was made to the UK's national fraud and cyber crime unit Action Fraud in July.
It was then referred to North Wales Police by the National Fraud Intelligence Bureau on August 11.
A spokeswoman for North Wales Police said: "We can confirm we have recently received correspondence concerning allegations of fraud against an Anglesey man.
"That matter is now under investigation."
Mr Gill has not yet spoken about the matter.
A Ukip spokesman told BBC Wales that the father-of-five had not been spoken to by detectives and no comment could be made when "no facts were known".
Ukip's leader in the Welsh Assembly Neil Hamilton said former Senedd colleague Mr Gill should publicly publish all details of his MEP expenses claims.
"This is taxpayers' money," he added.
"We have a right to know how it is spent."
Mr Gill quit his party's group in the Welsh Assembly earlier this week amid an ongoing row about "double jobbing".
Ukip AMs had called on the father-of-five to either resign from his Cardiff Bay or Brussells jobs.
The 43-year-old refused to back down and opted to become an independent AM instead - while also staying on as MEP for Ukip.
