Patrick Hill has publicly backed the efforts of the "Justice for the 21" campaign, and would later state that, following their 1991 release from prison, the Birmingham Six had been informed of the names of the true perpetrators of the Birmingham pub bombings and that their identities are known among the upper echelons of both the IRA and the British government. Hill stated that, following the 1998 Good Friday Agreement, he has been told that five members of the Provisional IRA have admitted to committing the Birmingham pub bombings, relying on a clause in the Good Friday Agreement offering immunity from prosecution. Two of these men have since died and a further two have been promised immunity, whereas a fifth man reportedly had not received any such assurances.