They’ve probably had some of the info for DECADES. Only now, with much of the “omerta” politics removed can something be done. Civilians have been researching this for 44 years. Calls for investigations went unheeded for at least 30 years. The Irish just doggedly refused to let it go.
And I am sure all IRA crimes of murder, torture (kneecapping and such), raping, robbery etc are all being victoriously pursued as well.