Accounting firm KPMG is engulfed in a scandal that has seen several senior leaders quit their roles and the corporate watchdog launch a formal investigation into the firm's business dealings.
It all centres on an internal whistleblower's allegations that some of the firm's senior partners misused confidential client documents.
The audit scandal has led to a "who's who" of current and former senior leaders from KPMG being hauled before a parliamentary hearing, due this Friday, June 19.
Here's what has happened so far and what we can expect on Friday.
A KPMG whistleblower raised concerns with the firm's senior leadership team in 2024 that confidential board papers from construction giant Lendlease were used to pitch for and win audit contracts from other firms, including Westpac and Dexus.
An internal investigation did not substantiate the claims, with a further external investigation by legal firm Ashurst supporting the initial outcome.
However, after the whistleblower raised further complaints with the board, a different external law firm, Allens, was appointed to complete another investigation into the claims, which is ongoing.
It has already uncovered secondary instances of inappropriate document sharing.
In March, with the protection of parliamentary privilege, Labor senator Deborah O'Neill aired the claims.
"I thought this would be in the public interest," she told ABC News.
In May, KPMG chief executive Andrew Yates and audit partner...
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