After announcing that he might have mistakenly collected housing allowances, the conservative senator Mike Duffy now has to refund around $90,000 to the federal government according to reports.

After weeks of denying and running away from media, Mike Duffy last Friday vowed to refund the housing allowances that he has claimed as a senator.

"The Senate rules on housing allowances are not clear and the forms are confusing. I filled out the Senate forms in good faith and believed I was in compliance with the rules," said Mike Duffy in a statement, "Now it turns out I may have been mistaken".

"Rather than let this issue drag on, my wife and I have decided that the allowance associated with my house in Ottawa will be repaid," added the Prince Edward Island senator.

Neither Mike Duffy nor the Canadian senate has officially revealed how much money the senator has to reimburse.

 However, the Canadian national news paper, the Star Monday calculated that Duffy might have to refund around $90,000.

Duffy has vowed to pay back whatever the amount might be.

"Whatever it is. The accountants . . . you know. We're going to pay it back," said Mike Duffy in the statement.

Senate auditing committee was investigating the senators who were under housing allowance scam.

Senator Patrick Brazeau of Quebec and Liberal Senator Mac-Harb were two others who were being investigated by the auditing committee.

Following the senate scandal, more than 78% of Canadians demanded to put an end to the senate or reform the senate according to a survey conducted by Ipsos Reid for Post Media News and Global Television.

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