The former Justice Minister Alan Shatter has called on the chairman of the Garda Siochana Ombudsman Commission to resign

Mr Shatter says Simon O'Brien cannot stay in office after failing to find the source of a leak about alleged bugging at his offices.

The report, conducted by senior counsel Mark Connaughton, says it was unable to establish individual responsibility for any disclosure - either on the part of an employee of GSOC or any other party.

A Sunday Times article, published on February 9th, created serious tensions between GSOC and the government.

It contained details from a report on a secret security sweep by British firm 'Verrimus', which was part of an investigation by GSOC into the suspected bugging of its offices.

A number of people were interviewed as part of the investigation, except the Sunday Times journalist who declined an invitation.

In the Dail this afternoon, Mr Shatter demanded that current Justice Minister Frances Fitzgerald publish the GSOC report into its bid to find the source of the leak.

He says nobody will be able to trust the office of GSOC if there is a risk of more leaks.