A member of Jeremy Corbyn's front bench team has stood aside from her shadow cabinet role while she is investigated over an "employment issue", Labour has said.
Shadow work and pensions secretary Debbie Abrahams, who has been leading Labour's fight against the Government's benefit cuts, will be temporarily replaced by her deputy Margaret Greenwood while an inquiry is carried out.
It is understood that Ms Abrahams has been the subject of a number of complaints, although no details of the allegations have been released by the party.
The "no prejudice investigation" will be carried out by the party rather than the Labour whips office.
A Labour spokesman said: "Debbie Abrahams has stood aside from her front bench role while the Labour Party investigates an employment issue.
"Margaret Greenwood will act as shadow secretary of state for work and pensions during this period."
Ms Abrahams first entered Parliament in 2010, winning the Oldham East and Saddleworth by-election after the election of Labour MP Phil Woolas was ruled void over false statements he made about a rival candidate.
She was made shadow minister for the disabled by Jeremy Corbyn in 2015 and was promoted to the shadow cabinet after last year's general election.