Is the Irish Police Service (Garda) an essential cog in the Organised Crime Network - can there be any doubt now?

Is the Irish Police Service (Garda) an essential cog in the Organised Crime Network - can there be any doubt now?: "The testimony on behalf of the papers, led by Paul Gallagher SC, was a potted history of the case, as gleaned from the garda investigation file. The file has been given to the Director of Public Prosecutions, who declared two weeks ago that there was insufficient evidence to prosecute anybody for the murder of du Plantier."?