Labour MP Clive Lewis has denied an allegation that he groped a woman at the party's annual conference.
The Labour Party is investigating after a formal complaint was made against the Norwich South MP.
Mr Lewis is alleged by the woman to have hugged her and given her backside "a big squeeze" at a conference event, it has been reported.
The MP told the BBC: "I know how I roll. I don't squeeze women's buttocks. They are lying or they are wrong."
A party spokeswoman said: "The Labour Party is investigating a formal complaint made today against Clive Lewis."