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Stabbing suspect wanted fishing gear, police say

South Boston man pleads not guilty

Prosecutors say Timothy Kostka broke into Barbara Coyne’s residence in South Boston on Patriots Day last week looking to steal high-end fishing equipment, but during the break-in he encountered the 67-year-old grandmother and fatally stabbed her. “The defendant … slipped into Barbara Coyne’s home in broad daylight, beat her and slashed her throat, leaving her bloody and dying,’’ said Ursula Knight, Suffolk assistant district attorney, during Kostka’s arraignment Monday in South Boston District Court.

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