A Conservative politician in the Welsh Parliament is being investigated over a bet on the timing of the general election.

Russell George was the fifth Conservative unveiled as facing inquiries by the Gambling Commission.

It comes on the same day the Conservatives withdrew their support for two general election candidates, including Mr George’s colleague Craig Williams, who is standing in the newly-named constituency of Montgomeryshire and Glyndŵr.

Mr George, whose seat is Montgomeryshire, said he will co-operate fully with the commission, and has “stepped back” from the Senedd’s Conservative frontbench.

BBC Newsnight has learned up to 15 Conservative candidates and officials are being looked at by the Gambling Commission over alleged betting on the timing of the general election.

It is understood the regulator will be carrying out interviews this week.

Mr George’s constituency was also represented by Mr Williams in Westminster before the dissolution of the UK parliament.

He had been the party’s spokesman for mid Wales on the Conservative frontbench.

In a statement issued after The Guardian broke the story, Mr George said: “Whilst I will cooperate fully with the Gambling Commission, it would not be appropriate to comment on this independent and confidential process.

“Doing so would only jeopardise and undermine the investigation. It is the Gambling Commission, not the media, that has the responsibility, powers and resources to properly investigate these matters and determine what, if any, action should be taken.

“I have stepped back from the shadow cabinet while the investigation is ongoing. I have done this as I do not wish to be an unnecessary distraction to their work.”

Andrew RT Davies, Welsh Conservative leader in the Senedd, said Mr George had informed him he had “received a letter from the Gambling Commission regarding bets on the timing of the general election”.

Mr Davies added: “All other members of the Welsh Conservative [Senedd] group have confirmed that they have not placed any bets.”

Welsh Labour campaign chair Jessica Morden said: “It took Rishi Sunak almost two weeks to take action on one of his Conservative candidates.

“How long will it take Andrew RT Davies to suspend Russell George?”

Plaid’s Mabon ap Gwynfor said: “You couldn’t make this up. Hours after backing dropped candidate Craig Williams after another betting scandal, Russell George is found to have done the exact same thing.

“He should have the whip withdrawn from the Welsh Conservative Senedd group at once.”

Reform’s Oliver Lewis, who is standing in Montgomeryshire and Glyndŵr, claimed the Conservatives were suffering “institutional rot”, adding: “We demand the Welsh Conservative whip be removed from Mr George pending conclusion of the investigation.”

A spokesperson for the Welsh Liberal Democrats said: “Time and time again we have seen the Conservatives more in scandal while the issues facing the country get worse.”

“Across Mid Wales we are the clear challengers to unseat the Conservatives,” they added.

Earlier on Tuesday the Conservatives confirmed they had withdrawn support for Mr Williams and Laura Saunders, the candidate for Bristol North West.

Both will appear on ballot papers, but could become independent if elected, pending the result of an investigation.

Two members of Conservative staff have also taken leaves of absence from their roles after it emerged they were being looked into by the Gambling Commission.

In a video statement posted to X, Mr Williams said he remained committed to the election.

He said he had “committed an error of judgment, not an offence” adding: “I want to reiterate my apology directly to you.”

“I am fully co-operating with routine inquiries from the Gambling Commission and I intend to clear my name,” he said.

Last week, a spokesperson for Ms Saunders said she would be co-operating with the Gambling Commission and had nothing further to add.

You can find a full list of candidates for the Montgomeryshire and Glyndŵr and Bristol North West constituencies on the BBC News website.