The auditor general has refused to fully sign off MPs’ expenses, salaries and pensions accounts for last year.
Amyas Morse raised concerns about nearly £15m of payments made in 2009-10, the year of the expenses scandal.
He said evidence could not be obtained for £1.8m of claims, because those MPs were under police investigation.
Despite a “major exercise” evidence had not been obtained for another £0.8m and evidence provided for £11.3m was not considered sufficient by auditors.
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