Mid-Ulster MP Martin McGuinness has been asked to return a £3,000 overpayment of rent for a London property as part of a long-running probe into parliamentary expenses.
The Deputy First Minister is one of 11 MPs from Northern Ireland who received letters from independent auditor Sir Thomas Legg asking for money to be returned.
Fermanagh/South Tyrone MP Michelle Gildernew said she had not been requested to make an
y repayments.
Around 600 MPs have received letters containing the interim results of a review of their second homes expenses claims over the last five years.
It follows a long-running probe by Sir Thomas, a former senior civil servant, and a team of accountants, who have spent months examining every form submitted by Westminster MPs.
In a statement, Sinn Fein confirmed the inquiry had identified an error made by the Fees Office at Westminster in relation to the overpayment of two months’ rent for Mr McGuinness's rental property three years ago.
The party said that the Fees Office had lost a claim for rent and asked for a duplicate to be faxed to it in August 2006.
The duplicate was sent and the bill was paid on September 1 and October 4.
A statement read: “This error was not picked up on at the time either by the Commons Fees Office or by Sinn Féin.
"Having had this matter brought to our attention we have immediately taken steps to refund this overpayment. At no time was any money paid directly to Martin McGuinness."
Meanwhile the MP who previously held the Mid-Ulster seat, the DUP's William McCrea, has been told to repay £5,329.
Mr McCrea said his repayments related to furniture he purchased, duplicated service charges and a duplicated allowance for a TV licence.
"In line with the party's position I will be repaying the £5,329," he said. "In common with other MPs I have been asked to provide mortgage interest statements and I have no difficulty in doing so."
