Martin criticises 'omerta' surrounding murder of Paul Quinn

Micheál Martin has criticised the omerta surrounding the murder of Paul Quinn amid questions about what Sinn Féin figures know about the young man's brutal murder.

The Fianna Fáil leader was reacting after the mother of the murder victim, Breege Quinn, earlier called on Sinn Féin to apologise for suggesting her son had been involved in criminality.