OTTAWA – After a lengthy investigation by the committee, three senators — Sen. Mike Duffy, Sen. Mac Harb and Sen. Patrick Brazeau — are facing full-blown audits into their housing claims by external auditors.

Two others who were brought in for questioning have had their names cleared.

Duffy has already gone public admitting he has to pay money back but will not say how much.

NDP MP Charlie Angus said he is not happy with the result.

“What a joke,” he said.

“I think Canadians are fed up with these guys. There’s clearly a huge problem in there but we have the senators circling the wagons protecting themselves. We need real accountability.”

The review began last month after revelations that some long-time Ottawa residents in the upper chamber were improperly claiming allowances meant to compensate senators who live far away from the capital.

The committee asked all 98 sitting senators to show documentation like their driver’s licences, health cards and income tax returns.

Sen. Jim Cowan said the results are positive.

“It found no irregularities as a result of the documentation that was filed or as a result of interviews that were held with several senators,” he said.

In a separate audit, investigators are questioning Sen. Pamela Wallin about her travel expenses.