document: NIreland man acquitted over 1977 murder of soldier NIreland man acquitted over 1977 murder of soldier -LRB- AP -RRB- DUBLIN -LRB- AP -RRB- -- A 60-year-old Northern Ireland man has been acquitted on charges he helped to kidnap , imprison and murder an undercover British soldier who was abducted from a border pub in 1977 . The killing of Capt. Robert Nairac , who tried to pass himself off as a Belfast IRA man during intelligence-gathering missions , remains a mystery of the Northern Ireland conflict . Six IRA men served prison sentences for Nairac 's killing , but his body was never found . Police arrested Kevin Crilly in 2008 after he told the BBC that he had driven an IRA gunman to the spot where Nairac was killed . But on Friday , a Belfast judge ruled that prosecutors failed to prove that Crilly knew Nairac was going to be killed , or that a clump of bloody hair found in a Crilly family car was Nairac 's .
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