Commonwealth v. Read — Trial ArchiveAndre Porto
Andre Porto is a DNA analyst at the Massachusetts State Police Crime Lab, accredited by ANAB. He performed autosomal DNA testing on evidence collected from John O'Keefe's clothing, a broken drinking glass recovered from 34 Fairview Road, Read's vehicle tail light, and other items. His testimony established statistically overwhelming DNA matches linking O'Keefe to several key pieces of physical evidence while also documenting the presence of additional unidentified contributors on those same items.
Trial 1 vs Trial 2
In Trial 1, the defense waived cross-examination entirely, leaving Porto's direct testimony unchallenged. In Trial 2, defense attorney Yannetti conducted a substantive cross that focused not on undermining Porto's findings but on the scope of what the lab was asked to investigate — specifically, whether DNA comparisons were ever sought against individuals connected to the Albert household. This line of questioning, absent from Trial 1, reflected the defense's more fully developed third-party culprit theory in the second proceeding.