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Patrick Mackay (pictured) has spent 47 years behind bars for the killings of Anthony Crean, Isabella Griffith and Adele Price in 1974 and 1975. His bid for freedom was denied at a Parole Board hearing
Serial killer Patrick Mackay, who split Catholic priest Anthony Crean s head in half with an axe in March 1975 , is considered to be Britain s longest-serving prisoner.