Elizabeth N. Dewar

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Massachusetts high court orders new trial in 2014 J'ouvert killing over flawed gunshot-residue evidence

Wrote the unanimous 2026 ruling

Keith Williams was convicted of first-degree murder for the 2014 shooting that killed Dawnn Jaffier during Boston's J'ouvert parade. On Tuesday, the state's highest court ordered a new trial, ruling the gunshot-residue evidence against him never met the standard for a positive test.

Updated 2 hours ago