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Sean O'Callaghan
Acting
Born January 26, 1954 — Died August 23, 2017 Tralee, County Kerry, Ireland
Sean O'Callaghan was a member of the Provisional Irish Republican Army, who from the late 1970s to the mid-1980s worked against the organisation from within as a mole for the Irish Government with the Garda Síochána's Special Branch.
