An update on a major review into the mass cancellation of 999 calls is expected at a Policing Authority meeting today.
A Garda review found up to 500 high-priority crimes weren't investigated because they were wrongly cancelled.
Garda commissioner Drew Harris will today face a second grilling by the Policing Authority, who ordered an independent investigation.
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Sinn Féin's justice spokesperson, Martin Kenny, says the saga has affected the gardai's reputation.