By The Associated Press

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PROVIDENCE, R.I. (AP) – The Rhode Island Supreme Court has overturned the conviction of a man found guilty three years ago of killing and sexually assaulting an 85-year-old great-grandmother in 1990.

The high court on Wednesday granted a new trial to David Roscoe after determining that a mistrial should have been declared after the prosecutor made “inappropriate, pungent, vulgar, and inaccurate remarks” during his closing argument and violated Roscoe's Sixth Amendment rights. In part, the prosecutor alleged the defense attorney had called the victim vulgar names.

Roscoe received two life sentences after he was convicted of the 1990 killing of 85-year-old Germaine Mouchon, found by her grandson in her West Warwick home.

Roscoe was linked to the case by sophisticated DNA testing in 2015 and convicted in 2016 of murder and first-degree sexual assault.

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