A two-year investigation involving 10 witness interviews, DNA swabs, ballistics analysis, photo arrays, and video surveillance reviews helped New Haven detectives identify and then arrest a 59-year-old man for the alleged murder of Troy Clark and the alleged shooting and injury of now-retired New Haven Police Capt. Anthony Duff.
That investigation is detailed in a 13-page arrest warrant affidavit written and signed on Aug. 24 by New Haven Police Det. Kealyn Nivakoff.
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