Sinn Féin's insisting the IRA was not involved in the killing of the Kevin McGuigan.
The PSNI's Chief Constable George Hamilton is to make a statement on the status of the IRA's activities later.
He's backing his detective's claims, that members of the provisionals may be linked to the shooting.
The chief constable has been meeting the political parties to update them on the investigation.
After his meeting with the chief constable, Sinn Féin's Gerry Kelly was insisting the IRA is no longer active:
