Stephen Hepburn MP has been suspended from the Labour Party following a sexual harassment complaint.
Mr Hepburn - an MP since 1997 - has had his case referred to the National Constitutional Committee, and is suspended pending that process.
The 59-year-old said he "completely refutes" an allegation that he targeted a female Labour member at a curry house over a decade ago.
He said he welcomed the investigation "so that the matter can be put to rest".
The Labour Party said it takes all complaints of sexual harassment "extremely seriously".
The panel which took the decision was advised by an independent barrister, following a report carried out by an independent investigator, and was anonymised so the panel did not know who the individual was.
A Labour Party spokeswoman said: "The Labour Party takes all complaints of sexual harassment extremely seriously, which are fully investigated and any appropriate disciplinary action taken in line with the party's rules and procedures.
"We are determined to challenge and overturn sexual harassment and misogyny within politics and across society as a whole. We cannot comment on individual complaints."
Mr Hepburn has represented Jarrow in Gateshead, north east England, since becoming the Jarrow representative in the nineties.
He continues to sit as an independent MP now his Labour Party membership has been suspended.