An 18-year-old has been sentenced for a deadly 2023 stabbing in Boston's Jamaica Plain neighborhood that prosecutors say was the result of a feud started when the suspect's boyfriend sent an explicit video to one of the victims.

Wilmary Mejia Matos, of Roxbury, pleaded guilty to manslaughter in the death of Brianna Brown, 21, and to assault and battery with a dangerous woman causing serious bodily injury for the stabbing of a 17-year-old on February 11, 2023, according to the Suffolk County District Attorney's Office.

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The Suffolk County District Attorney's Office said Sunday that the 16-year-old girl will be arraigned Monday on murder and other charges in West Roxbury - Boston Municipal Court in connection to the

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