The Garda Commissioner is facing mounting pressure to stand down from her position.

Sinn Féin will publish a motion of no confidence in Noirín O'Sullivan today.

It follows the latest revelations from within the force about discrepancies of prosecutions for road traffic offences.

At the weekend the Commissioner said the revelations over penalty points and garda breath test errors were "totally unacceptable" .

Sinn Fein Justice spokesperson Jonathan O'Brien says it's time for the Commissioner to go: