Sean O'Callaghan
Acting·January 26, 1954·† August 23, 2017 — 63 years old·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.
