The deputy leader of the Scottish Conservatives has branded Ross Thomson's behaviour "completely unacceptable" after a report of "sexual touching" in a Commons bar.

Police were called to Westminster's Strangers Bar following an incident on Tuesday at 11pm.

Three men, including the 31-year-old Aberdeen South MP, were said to have been involved before officers were alerted.

The Metropolitan Police said in a statement that no one was arrested and no formal allegations were made.

Thomson, a former MSP, was elected to represent Aberdeen South in Westminster in the 2017 general election.

Speaking to the press after First Minister's Questions, Jackson Carlaw said the Scottish Tories were investigating the incident.

He said: "Like others I became aware of alleged behaviour by one of my parliamentary colleagues in the House of Commons on Tuesday night from social media reports yesterday afternoon.

"Inquiries are ongoing, however, I know enough to say that the alleged behaviour is completely unacceptable and falls well below the standard I think any of us would expect of any elected representative.

"Those inquiries are ongoing and we may have more to say at a later time."

Pressed by STV News on whether Thomson should consider his position, Carlaw replied: "I can say, and I'm quite happy to say, his behaviour is completely unacceptable."

He is standing in as interim leader of the Scottish Conservatives while Ruth Davidson is on maternity leave.