A man serving a life sentence for killing an assistant district attorney (ADA) for Middlesex County in 1980 has been denied parole.

Arnold Evans was convicted on May 22, 1981 of first-degree murder for the fatal shooting of Edward T. Bigham III and sentenced to life in prison without the possibility of parole.

Additionally, Evans was convicted on counts of armed assault with the intent to rob and assault and battery with a dangerous weapon. He was sentenced up to 20 and up to 10 years for those crimes, respectively, to be served concurrently with his life sentence.

Bigham was killed on Oct. 2, 1980, at around 1 a.m., according to the Parole Board’s decision on the case dated Nov. 17.

Bigham had been in his car that had broken down along the Charles River, near the Massachusetts Institu

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