Taoiseach Enda Kenny and Tánaiste Eamon Gilmore are due to hold discussions about documents alleging that members of the gardaí did not properly investigate a number of serious crimes.

The claims, made by Garda whistleblower Maurice McCabe, are contained in documents given to Mr Kenny last Wednesday by Fianna Fáil leader Micheál Martin.

A Government spokesman confirmed that Mr Kenny and Mr Gilmore would be in contact over the issue today.

It has emerged that the husband of Sylvia Roche Kelly - who was murdered by Jerry McGrath in December 2007 - is suing the State.

The action alleges that McGrath was free to kill when he should have been in custody.

Garda handling of previous incidents involving McGrath are at the centre of the whistleblower's claims.

An internal review of all correspondence between Mr McCabe and the Department of Justice is continuing.

A spokeswoman for the Minister for Justice said it was unlikely that any comment would be made by Minister Alan Shatter over the weekend.